Tiêu đề 20. LOCOMOTION AND MOVEMENT.pdf ✅

PAPER 1 (1.) Which muscle is though involuntary but structurally similar to skeletal muscle : (1) Uterus muscle (2) Heart muscle (3) Gastric muscle (4) Triceps muscles (2.) Which is an correct statement : a- Muscle contraction is a passive process b- Muscles of intestine are involuntary in nature c- Fascia is a layer of connective tissue d- Muscle bundle is called as sarcomere (1) a and b only (2) b and c only (3) a, b and d (4) b, c and d (3.) Which is a unit of muscle contraction : (1) Aband (2) Sarcomere (3) Actin filament (4) Myosin filament (4.) The central part of thick filament which is not overlapped by thin filaments is called as : (1) Zzone (2) H − zone (3) I-zone (4) F-zone (5.) Choose the incorrect statement : a- Dark band is called Isotropic-band b- Cardiac muscles are striated and voluntary c- Z line bisects I-band (1) a and b only (2) b and c only (3) a and c only (4) a, b and c (6.) ATPase enzyme, essential for muscle contraction is found in : (1) Actin (2) Myosin (3) Troponin (4) Tropomyosin (7.) In the resting state a subunit of troponin masks the active binding sites for myosin on : (1) Actin filaments (2) Meromyosin filament (3) M-line (4) H-zone (8.) During contraction of skeletal muscle, 2 Ca + bind to : (1) Myosin (2) Troponin (3) Tropomyosin (4) Myosin ATPase (9.) Which statement is correct for muscle contraction: (1) Length of H -zone decreases (2) Length of A-band decreases (3) Length of two Z-lines increases (4) Length of I-band remains constant
(10.) Which neurotransmitter generates an action potential in the sarcolemma : (1) Acetyl choline (2) GABA (3) Cortisol (4) Glycine (11.) On violent exercise such as fast running causes muscular fatigue and cramps due to : (1) Uric acid accumulation (2) Calcium oxalate accumulation (3) Shortening of tendons (4) Lactic acid accumulation (12.) Pelvic girdle consists of : (1) Ilium only (2) Ilium and ischium only (3) Ischium and pubis only (4) Ilium, ischium and pubis (13.) Which of the following is a synovial joint : (1) Ball and socket joint (2) Hinge joint (3) Fibrous joint (4) Both A & B (14.) Wild contractions of muscles due to low 2 Ca + in body fluid is called as : (1) Arthritis (2) Tetany (3) Osteoporosis (4) Gout (15.) Which statement is incorrect for limb : (1) Tarsals are 7 in number (2) Metatarsals are 5 in number (3) Carpals are 8 in number (4) Humerus is the longest bone (16.) Read the following statement : (a) Muscle is a specialised tissue of endodermal origin (b) Muscle is a specialised tissue of mesodermal origin (c) About 70 80 − per cent of the body weight of a human adult is contributed by muscles (d) Skeletal muscles have a striped appearance Choose the correct options : (1) a and b is correct (2) b, c and d is correct (3) b and d is correct (4) a and c is correct (17.) Identify A, B, C and D in diagram of cross section of muscles & choose correct option :
(1) A-Blood capillary, C-Sarcolemma (2) B-Fascicle, C-Sarcolemma (3) C-Blood capillary, D-Sarcolemma (4) A-Fascicle, B-Muscle fibre (18.) Which statement is correct for light band of myofibril: (a) Light band called ' l ' band (b) Light band called ' A ' band (c) Light band is isotropic with polarised light (d) Light band is anisotropic with polarised light Choose the correct options : (1) a and b is correct (2) b, c and d is correct (3) a and d is correct (4) a and c is correct (19.) Identify A, B and C in an actin filament and choose the correct option : (1) A-Troponin, B-F actin, C- Tropomyosin (2) A-F actin, B-Troponin, C- Tropomyosin (3) A-Troponin, B-Tropomyosin, C-F actin (4) A-Tropomyosin, B-F actin, C- Troponin
(20.) Which statement is incorrect for thick filament muscle fibre : (1) Thick filament is formed by a polymerised protein (2) The head with short arm of meromyosin is formed by HMM (3) Each thick filament is formed by actin protein (4) The tail of meromyosin is formed by LMM (21.) Identify A B C , , and D in given two relax sarcomere and choose the correct option : (1) A-'I' Band, C-'H' Zone (2) B-'I' Band, C-'A' Band (3) C-'I' Band, D-'Z' Line (4) A-'Z' Line, B-'H' Zone (22.) Sarcoplasmic reticulum is present in which structure: (1) Muscle (2) Neuroglia (3) Nervous tissue (4) Kidney (23.) Parallely arranged filaments in the sarcoplasm of skeletal muscle fibre are called as : (1) Myofibre (2) Myofibrils (3) Both 1 and 2 (4) Muscle tone (24.) The portion of the myofibril between two successive Z line is : (1) Fascia (2) Sarcomere (3) Hzone (4) Both A and C (25.) Which is a false statement : a- Globular head of myosin has ATPase activity b- F - actin is made up of meromyosins c- G-actin is a polymer of F-actin d- L.M.M. is a part of actin (1) b, c and d (2) ab, and c (3) a and c (4) All (26.) Acetabulum is a part of (1) Pectoral girdle (2) Pelvic girdle (3) Femur (4) Humerous (27.) Which is an incorrect statement : (1) Dark band is called I-band (2) Cardiac muscles are striated (3) Skeletal muscle fibre is syncytial in nature (4) Dark band is called A-band