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Locomotion And Movement Mcq
Quiz 4
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Q.1
Long neck of Camel or Giraffe have ... ...[ BHU 2000 ]
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a) Numerous cervical vertebrae
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b) Development of extra large intervertebral pads
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c) Longer vertebrae
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d) Development of extra bony plates between adjacent cervical vertebrae
Explanation
Just like humans, giraffes have seven neck vertebrae. For giraffes, however, each one can be over 10 inches (25.4 centimeters) long Answer : (c)
Q.2
Acromion process is part of ... ... [ MPPMT 2003]
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a) Vertebral column
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b) Pelvic girdle
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c) Femur
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d) Pectoral girdle
Explanation
Answer : (d)
Q.3
Coracoid is component of ... ... [ BHU 1999]
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a) Fore limb
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b) Skull
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c) Pectoral girdle
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d) Pelvic girdle
Explanation
Answer : (c)
Q.4
Wall of internal organs (stomach, intestine, blood vessels) contains muscles ... ...[ CET Chd 2009 ]
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a) Striped
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b) Cardiac
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c) Smooth
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d) None of the above
Explanation
Smooth muscle fibers are located in walls of hollow visceral organs, except the heart, appear spindle-shaped, and are also under involuntary control. Answer : (c)
Q.5
Sarcomere is distance between ... .... [ BHU 2001 ]
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a) Two I-bands
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b) A and I bands
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c) Two Z-lines
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d) Z and A bands
Explanation
Answer : (c)
Q.6
ATP-ase needed for muscle contraction is present over ... .... [ CBSE 2004]
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a) Actinin
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b) Troponin
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c) Myosin
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d) Actin
Explanation
ATP-ase needed for muscle contraction is present over myosin Answer : (c)
Q.7
Long bones function is .... .... [ CBSE 1993]
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a) Support
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b) Support, erythrocyte and leucocyte synthesis
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c) Support and erythrocyte synthesis
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d) Erythrocyte formation
Explanation
Long bones function is Support, erythrocyte and leucocyte synthesis. Red blood cells are produced by cores of bone marrow in the heads of long bones in a process known as hematopoiesis..one marrow is also a key component of the lymphatic system, producing the lymphocytes that support the body's immune system. Answer : (b)
Q.8
The reactions which change lactic acid into glycogen come under ... ..... [ kerala 2001]
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a) Calvin cycle
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b) Cori cycle
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c) Krebs cycle
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d) Glycolysis
Explanation
The Cori cycle (also known as the Lactic acid cycle), refers to the metabolic pathway in which lactate produced by anaerobic glycolysis in the muscles moves to the liver and is converted to glucose, Answer : (b)
Q.9
Study the statements about human skeleton i) Skull is dicondylic ii) Metacarpals are five in numbers iii) Patella is a cup-shaped bone covering the knee dorsally iv) Scapula is a large triangular flat bone, situated on the ventral side of thorax v) The pelvic girdle has two coxal bones .... ..... [ kerala 2012]
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a) i, v are wrong
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b) i, ii are wrong
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c) ii, v are wrong
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d) iii and iv are wrong
Explanation
Statement (iii) The patella, also known as the kneecap, is a thick, circular-triangular bone which articulates with the femur (thigh bone) and covers and protects the anterior articular surface of the knee joint Statement (iv) is wrong as the top of the scapula is attached to the clavicle by ligaments. The outer side of the scapula connects with the humerus bone of the upper arm. Statement (iv) is wrong Answer : (d)
Q.10
Bone formed by ossification of tendon is ... ... [ MPPMT 2002]
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a) Dermal bone
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b) Cartilage
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c) Sesamoid bone
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d) Membrane bone
Explanation
Sesamoid bone is a bone embedded within a tendon or a muscle. a small independent bone or bony nodule developed in a tendon where it passes over an angular structure, typically in the hands and feet. The kneecap is a particularly large sesamoid bone. A dermal bone or membrane bone is a bony structure derived from intra membranous ossification examples are skull, jaws, gill covers Answer : (c)
Q.11
The important muscles proteins that help in movement are ... ... [ AMU 2012]
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a) Actin and myosin
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b) Troponin
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c) Tropomyosin
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d) All the above
Explanation
Muscle contraction and many other movement processes are controlled by the interplay between myosin and actin filaments. Two further proteins, tropomyosinand troponin, regulate how myosin binds to actin. Answer : (d)
Q.12
Axis vertebra is identified by ... ... [ MPPMT 2009]
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a) Sigmoid notch
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b) Odontoblast
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c) Odontoid process
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d) Olecranon process
Explanation
The second cervical vertebra (C2) of the spine is named the axis or epistropheus. The most distinctive characteristic of this bone is the strong odontoid process known as the dens which rises perpendicularly from the upper surface of the body. Answer : (c)
Q.13
Latissimus dorsi muscle is .... .... [ BHU 1997]
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a) Chest muscle
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b) Shoulder muscle
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c) Leg muscle
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d) Back muscle
Explanation
The latissimusdorsi muscle is one of the largest muscles in the back. Answer : (d)
Q.14
Excitation - contraction coupling involves all except ... ... [ W.B.2009]
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a) Generation of end plate potential
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b) Release of calcium from troponin
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c) Hydrolysis of ATP to ADP
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d) Formation of cross-linkage between actin and myosin
Explanation
Ca++ release from the sarcoplasmic reticulum. This link is known as excitation-contraction coupling. Answer : (b)
Q.15
Zygomatic arch of rabbit (mammals) is formed of .... ... [Pb.PMT 2000]
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a) Maxilla, periotic and jugal
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b) Maxilla, squamosal and jugal
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c) Maxilla, pre-maxilla and squamosal
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d) Periotic, jugal and palatine
Explanation
Answer : (b)
Q.16
An example of gliding joint is ... .... [ MPPMT 1992]
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a) Humerus and glenoid cavity
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b) Femur and tibio-fibula
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c) Occipital condyle and odontoid process
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d) Zygapophyses of adjacent vertebrae
Explanation
The facet joints, (or zygapophysial joints, zygapophyseal, apophyseal, or Z-joints) are a set of synovial, plane joints between the articular processes of two adjacent vertebrae. Answer : (d)
Q.17
Dark color of breast muscles of birds of flight is due to high concentration of ... ...[ AMU 2011]
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a) Mitochondria
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b) Haemoglobin
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c) Myoglobin
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d) Both myoglobin and mitochondria
Explanation
The red color comes from a high concentration of myoglobin in the fibers. Myoglobin, like the hemoglobin in our red blood cells, binds oxygen that can be released as needed to the muscle fibers to allow them to contract Answer : (c)
Q.18
Which is not the function of bones ... ... [ CET Chd. 2001]
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a) Protection of vital organs
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b) Haemopoiesis
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c) Muscle attachment
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d) Secretion of hormones
Explanation
Harmone are not secreted by bones, however bones secrete a protein called osteocalcin, discovered in the 1970s, that rebuilds the skeleton. Answer : (d)
Q.19
How many ribs are present in human being? ... ... [ HPPMT 2005]
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a) 6 pairs
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b) 9 pairs
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c) 15 pairs
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d) 12 pairs
Explanation
The human rib cage is made up of 12 paired rib bones; each are symmetrically paired on a right and left side. Of all 24 ribs, the first seven pairs are often labeled as 'true. ' These bones are connected to the costal cartilage, while the five other 'false' sets are not. Answer : (d)
Q.20
During muscle contraction .... .... [ CBSE 2001]
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a) Size of A-bands remains the same
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b) Size of H-zone becomes smaller
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c) Size of I-bands decreases
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d) All the above
Explanation
When a sarcomere shortens, some regions shorten while others remain the same length. A sarcomere is defined as the distance between two consecutive Z discs or Z lines. When a muscle contracts, the distance between the Z discs is reduced. The H zone, the central region of the A zone, contains only thick filaments and shortens during contraction. The I band contains only thin filaments and also shortens. The A band does not shorten; it remains the same length, but A bands of adjacent sarcomeres move closer together during contraction. Answer : (d)
Q.21
Immediate source of energy for muscle contraction is ... ... [ AFMC 2000 ]
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a) Glucose
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b) GTP
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c) Creatine phosphate
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d) ATP
Explanation
Creatine phosphate is a molecule that can store energy in its phosphate bonds. In a resting muscle, excess ATP transfers its energy to creatine, producing ADP and creatine phosphate. This acts as an energy reserve that can be used to quickly create more ATP. When the muscle starts to contract and needs energy, creatine phosphate transfers its phosphate back to ADP to form ATP and creatine. This reaction is catalyzed by the enzyme creatine kinase and occurs very quickly; thus, creatine phosphate-derived ATP powers the first few seconds of muscle contraction. However, creatine phosphate can only provide approximately 15 seconds worth of energy Answer : (c)
Q.22
Friction is lessened in ball-and socket joint by ... ...[ MPPMT 1990]
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a) Coelomic fluid
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b) Synovial fluid
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c) Pericardial fluid
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d) Mucin
Explanation
Answer : (b)
Q.23
Intra-articular disc occurs in .... .... [ BHU 2005]
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a) Wall of heart
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b) Wall of liver
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c) Public symphysis
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d) In between two vertebrae
Explanation
Intra-articular disc occurs in between two vertebrae The facet joints, (or zygapophysial joints, zygapophyseal, apophyseal, or Z-joints) are a set of synovial, plane joints between the articular processes of two adjacent vertebrae. Answer : (d)
Q.24
Yellow bone marrow occurs in medullary cavity of ... .... [ Har PMT 2007]
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a) Short bones
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b) Spongy bone
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c) Long bones
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d) All the above
Explanation
Answer : (c)
Q.25
Ribs are attached to .... .... [RPMT 1996]
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a) Scapula
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b) Sternum
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c) Clavicle
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d) Ilium
Explanation
The first seven sets of ribs, known as "true ribs" (costae verae) also known as vertebrosternal ribs, are directly attached to the sternum through the costal cartilage. Answer : (b)
Q.26
Muscle band that remains unchanged during contraction and relaxation of skeletal muscle is ... .... [ kerala 2005]
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a) I
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b) H
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c) A
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d) Z-line
Explanation
When a sarcomere shortens, some regions shorten whereas others stay the same length. A sarcomere is defined as the distance between two consecutive Z discs or Z lines; when a muscle contracts, the distance between the Z discs is reduced. The H zone—the central region of the A zone—contains only thick filaments and is shortened during contraction. The I band contains only thin filaments and also shortens. The A band does not shorten—it remains the same length—but A bands of different sarcomeres move closer together during contraction, eventually disappearing. Thin filaments are pulled by the thick filaments toward the center of the sarcomere until the Z discs approach the thick filaments. The zone of overlap, in which thin filaments and thick filaments occupy the same area, increases as the thin filaments move inward. Answer : (c)
Q.27
Human vertebra is ... .... [ BHU 2012]
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a) Procoelous
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b) Amphicoelous
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c) Acoelous
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d) Heterocoelous
Explanation
Human vertebra is Acoelous THE SHAPES OF THE ARTICULATING ENDS OF VERTEBRAE The end surfaces of the vertebrae are known to be of different shapes in various groups of vertebrates. The consistency of the shapes within the different groups of vertebrates helps in the identification of fossils or animal remains. Amphicoelous groups. The amphicoelous vertebra has a concave depression at either end. Groups with amphicoelous vertebrae include most bony fish, a few salamander groups, the caecilians, some lizard groups, and the tuatura. Opisthocoelous groups. The opisthocoelous vertebra is concave at the posterior end but not the anterior end. Most salamanders are of the opisthocoelous type. Acoelous groups. Acoelous vertebrae are flattened on both ends. Mammals are acoelous. Heterocoelous groups. Heterocoelous vertebrae have saddle shaped ends. They are concave on one axis and convex on the other. They fit together like one saddle placed upside down and at nintydegrees on top of another. This is one of the most flexible of vertebral joints and is found in the free vertebrae of birds, especially in the neck. The types are Procoelous (anterior part is concave), Ophisthocoelous (Posterior is concave), Amphicoelous (Both are concave), Acoelous( Both sides are flat), heterocoelous (both sides are asymmetrical), Biconvex. Vertebrae are the structural unit of the vertebral column. Answer : (c)
Q.28
Actin filaments depolymerise and repolymerise in motile cells with ... ...[ CET Chd. 2001]
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a) 0.2 - 0.3 millisecond
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b) 1.0 -2.0 minutes
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c) 1-2 hours
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d) 2-3 days
Explanation
Answer : (a)
Q.29
Lactic acid deposition leads to ... ... [ Wardha 2005]
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a) Tetany
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b) Muscle fatigue
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c) Muscle strain
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d) Convulsions
Explanation
Answer : (b)
Q.30
Muscle activity ... .... [ CMC 2003]
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a) Increases body temperature
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b) Decreases BMR
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c) Decreases venous return
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d) Reduces blood and lymph flow
Explanation
Answer : (a)
0 h : 0 m : 1 s
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