Free Support and Movement MCQs with Answers
738 Support and Movement MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Support and movement covers the axial and appendicular skeleton, bone structure, joints and the arrangement of skeletal muscles. Muscle contraction is explained through actin, myosin, sliding filaments, calcium ions and ATP, while arthritis is distinguished as a disorder of joints rather than a normal part of movement.
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- A. Actin blocks the myosin binding site
- B. Tropomyosin blocks the myosin binding site
- C. Troponin blocks the myosin binding site
- D. Tropomyosin blocks the troponin binding site
Explanation: In a relaxed fibre the long tropomyosin strand lies across the myosin binding sites on actin, so no cross bridge can form.
Correct answer: Tropomyosin blocks the myosin binding site- A. Actin and myosin form a cross-bridge
- B. Calcium is pumped back into the sarcoplasmic reticulum
- C. Calcium is released from the sarcoplasmic reticulum
- D. ATP is hydrolyzed by troponin
Explanation: The action potential travels down the T tubules and triggers the sarcoplasmic reticulum to release calcium, which then binds troponin and…
Correct answer: Calcium is released from the sarcoplasmic reticulum- A. Elastic cartilage
- B. Fibrocartilage
- C. Costal cartilage
- D. Articular cartilage
Explanation: Fibrocartilage is tough and compressible, which suits a slightly movable joint that must bear load, and it is the same tissue found in the…
Correct answer: Fibrocartilage64. Arthritis is:
- A. Inflammation of joints
- B. Herniation of intervertebral disc
- C. Fusion of vertebral joint
- D. Tingling along the length of legs
Explanation: The word itself means inflammation of a joint, from arthron for joint and itis for inflammation, and it covers osteoarthritis, rheumatoid…
Correct answer: Inflammation of joints- A. Fibrous joints
- B. Immoveable joints
- C. Cartilaginous joints
- D. Freely moveable joints
Explanation: The pubic symphysis is a cartilaginous joint, its two bones joined by a pad of fibrocartilage that allows slight movement, which becomes…
Correct answer: Cartilaginous joints- A. Epiglottis & intervertebral disc
- B. Trachea & intervertebral disc
- C. Nose & pinna
- D. Nose & trachea
Explanation: The C shaped rings of the trachea and the supporting plates of the nose are both hyaline cartilage, the smooth glassy type that also…
Correct answer: Nose & trachea- A. Presence of striation
- B. Involuntary control
- C. Multinucleated fibers
- D. Intercalated discs
Explanation: Both use the same regular arrangement of actin and myosin filaments, so both show cross striations under the microscope.
Correct answer: Presence of striation- A. Skeletal and smooth
- B. Skeletal and cardiac
- C. Cardiac and smooth
- D. Smooth muscle only
Explanation: Cardiac muscle beats rhythmically without conscious control and smooth muscle works the gut, blood vessels and other hollow organs…
Correct answer: Cardiac and smooth- A. Intestine & biceps
- B. Intestine & blood vessels
- C. Heart & lungs
- D. Stomach & heart
Explanation: The walls of the intestine and of blood vessels both contain smooth muscle, which has no striations and works involuntarily.
Correct answer: Intestine & blood vessels- A. Progesterone.
- B. Oestrogen.
- C. Parathyroid hormone.
- D. Calcitonin.
Explanation: Oestrogen normally suppresses bone resorption and helps maintain bone mass; its decline after menopause allows osteoclast activity to…
Correct answer: Oestrogen.- A. Liver
- B. Skin
- C. Intestine
- D. Brain
Explanation: The skin is generally regarded as the heaviest organ of the human body, with its mass including the epidermis, dermis and associated…
Correct answer: Skin- A. 12
- B. 14
- C. 16
- D. 18
Explanation: Humans have 12 pairs of ribs, and the first seven pairs attach directly to the sternum; these are called true ribs.
Correct answer: 14- A. Chondrology
- B. Osteology
- C. Mycology
- D. Histology
Explanation: Osteology is the branch of anatomy concerned with bones and the skeletal system.
Correct answer: Osteology- A. Leg
- B. Ear
- C. Hand
- D. Nose
Explanation: The tibia is the larger medial bone of the lower leg, extending from the knee to the ankle and bearing much of the body's weight.
Correct answer: Leg- A. 212
- B. 206
- C. 300
- D. None of these
Explanation: A human baby has about 300 bones because many skeletal elements are still separate.
Correct answer: 300- A. Vertebral column
- B. Rib cage
- C. Skull
- D. Shoulder
Explanation: The pelvic girdle attaches the lower limbs to the axial skeleton through the hip bones, which connect with the sacrum of the vertebral…
Correct answer: Vertebral column- A. vomer
- B. stapes
- C. navicular
- D. occipital
Explanation: The stapes is the smallest bone in the human body and lies in the middle ear, where it transmits vibrations toward the inner ear.
Correct answer: stapes- A. 18 bones
- B. 20 bones
- C. 22 bones
- D. 28 bones
Explanation: The skull has 22 bones in the usual anatomical count: 8 cranial bones plus 14 facial bones, giving 8 + 14 = 22 bones.
Correct answer: 22 bones79. Outer surface of bones is covered by a dense layer of connective tissue, called as ___________ ?
- A. Periosteum
- B. Woven bone
- C. Epithelium lining
- D. Connective lining
Explanation: The periosteum is a dense connective-tissue covering around the outer surface of most bones; it contains blood vessels, nerves and…
Correct answer: Periosteum- A. Vitamin D
- B. Vitamin E
- C. Vitamin C
- D. Vitamin A
Explanation: Vitamin D promotes intestinal absorption of calcium and phosphate, enabling proper mineralization of bone; its deficiency causes…
Correct answer: Vitamin D