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Class 11 Biology MCQ Chapter 17 Locomotion and Movement
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Locomotion and Movement
Chapter – 17
| UNIT – (V) HUMAN PHYSIOLOGY |
| MCQ |
1. The human skull is made up of 22 bones, the cranium and the facial bones.
(a) 10,12
(b) 14, 8
(c) 12,10
(d) 8, 14
Ans: (a) 10,12
2. A motor neuron stimulates a muscle fiber at ____________.
(a) The sarcoplasmic reticulum.
(b) The myofibril.
(c) The transverse tubules.
(d) The neuromuscular junction.
Ans: (d) The neuromuscular junction.
3. Humans have the most prominent sesamoid bone, the _____________.
(a) Pelvis.
(b) Femur.
(c ) Ulna.
(d) Patella.
Ans: (d) Patella.
4. The skull’s ______________ is the only part that can move.
(a) Nasal Conchae.
(b) Mandible.
(c) Vomer.
(d) Maxilla.
Ans: (b) Mandible.
5. Skeletal muscle bundles are held together by a standard connective tissue layer called.
(a) Perimysium.
(b) Endomysium.
(c ) Fascia.
(d) Aponeurosis.
Ans: (c) Fascia.
6. What is the incorrect set of antagonistic muscles?
(a) Flexor – Relaxor.
(b) Abductor – Adductor.
(c) Pronator – Supinator.
(d) Levator – Depressor.
Ans: (a) Flexor – Relaxor.
7. All of the following lengths are reduced during muscle contraction except for:
(a) H-Zone.
(b) A-Band.
(c) Band.
(d) Sacromere.
Ans: (b) A-Band.
8. The clavicle is articulated with the:
(a) Xiphoid process of the sternum.
(b) Acromion of the scapula.
(c) The glenoid cavity of the scapula.
(d) Head of the humerus.
Ans: (b) Acromion of the scapula.
9. In sustained muscle contractions, there is a lack of relaxation between successive stimuli known as ____________.
(a) Fatigue.
(b) Tonus.
(c) Tetanus.
(d) Spasm.
Ans: (c) Tetanus.
10. A motor neuron stimulates a muscle fiber at ____________.
(a) The sarcoplasmic reticulum.
(b) The myofibril.
(c) The transverse tubules.
(d) The neuromuscular junction.
Ans: (d) The neuromuscular junction.
11. The pivot joint between the atlas and the axis is a type of:
(a) Fibrous joint.
(b) Synovial joint.
(c) Saddle joint.
(d) Cartilaginous joint.
Ans: (b) Synovial joint.
12. Which protein blocks myosin-binding sites on actin in a relaxed muscle?
(a) Troponin.
(b) Tropomyosin.
(c) Actin.
(d) Myosin.
Ans: (b) Tropomyosin.
13. Which type of joint is found between the first two vertebrae?
(a) Saddle joint.
(b) Ball and socket joint.
(c) Pivot joint.
(d) Hinge joint.
Ans: (c) Pivot joint.
14. What is the term for a muscle that decreases the angle between two bones?
(a) Extensor.
(b) Flexor.
(c) Abductor.
(d) Adductor.
Ans: (b) Flexor.
15. Which connective tissue covers muscle fiber?
(a) Epimysium.
(b) Perimysium.
(c) Endomysium.
(d) Myomysium.
Ans: (c) Endomysium.
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