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. Calcitonin and thymosin - Thyroid hormones
- B. Pepsin and prolactin -Two digestive enzymes secreted in stomach
- C. Troponin and myosin - Complex proteins in striated muscles
- D. Secretin and rhodopsin - Polypeptide hormones
Explanation: Skeletal muscle fibres occur in bundles and are normally attached to the skeleton.
Correct answer: Troponin and myosin - Complex proteins in striated muscles- A. Heart is involuntary and unstriated smooth muscle
- B. Intestine is striated and involuntary
- C. Thigh is striated and voluntary
- D. Upper arm is smooth muscle and fusiform in shape.
Explanation: A) Cardiac muscles are found in the wall of the heart. It is involuntary and slightly striated.B) Smooth muscles are found in…
Correct answer: Thigh is striated and voluntary- A. Sternum and ribs - Axial skeleton
- B. Clavicle and glenoid cavity - Pelvic girdle
- C. Humerus and ulna - Appendicular skeleton
- D. Malleus and stapes - Ear ossicles
Explanation: Each pectoral girdle consists of two bones, clavicle and scapula. The scapula (shoulder blade) consists of a sharp ridge, the spine and a…
Correct answer: Clavicle and glenoid cavity - Pelvic girdle- A. Ilium, ischium and pubis -> Coxal bones of pelvic girdle
- B. Actin, myosin, rhodopsin -> Muscle proteins
- C. Cytosine, uracil, thiamine -> Pyrimidines
- D. Malleus, incus, cochlea -> Ear ossicles
Explanation: The correct matching of the three items and their grouping category is: Ilium, ischium, and pubis -> Coxal bones of the pelvic girdle The…
Correct answer: Ilium, ischium and pubis -> Coxal bones of pelvic girdle- A. Hinge joint
- B. Gliding joint
- C. Ball and socket joint
- D. Pivot joint.
Explanation: Hinge joint is a form of diarthrosis (freely movable joint) that allows angular movement in one plane only, increasing or decreasing the…
Correct answer: Hinge joint- A. Collar bones - 3 pairs
- B. Salivary glands - 1 pair
- C. Cranial nerves - 10 pairs
- D. Floating ribs - 2 pairs
Explanation: In humans there are normally 12 pairs of ribs. The first seven pairs are attached directly to the sternum by costal cartilages and are…
Correct answer: Floating ribs - 2 pairs- A. Pelvic girdle of mammals
- B. Pectoral girdle of mammals
- C. Skull of frog
- D. Sperm of mammals
Explanation: Each half of pectoral girdle is made up of two bones scapula and clavicle.
Correct answer: Pectoral girdle of mammals- A. Hinge joint between vertebrae
- B. Gliding joint between zygapo physes of the successive vertebrae
- C. Cartilaginous joint of skull bones
- D. Fibrous joint between phalanges
Explanation: Gliding joint permits sliding movements of two bones over each other. Hinge joint allows movements in one plane only.
Correct answer: Gliding joint between zygapo physes of the successive vertebrae- A. Bones will move freely at joint and no pain
- B. Bone less movable at joint and pain
- C. Bone will become unfixed
- D. Bone will become fixed
Explanation: Ligaments join a bone with another bone in movable/synovial joints. Torn ligaments make movement at joints very painful and restricted.
Correct answer: Bone less movable at joint and pain- A. Calcified cartilage
- B. Hyaline cartilage
- C. Elastic cartilage
- D. Fibrous cartilage
Explanation: Cartilage is an important component of skeleton. It consists of a firm matrix containing collagen and elastin fibres and cells in…
Correct answer: Hyaline cartilage- A. Length of H-zone decreases and might disappear - Length of A-band remains constant
- B. Length of I-band remains constant
- C. Length of I band increases
- D. Length of the two Z-line increases
Explanation: In contraction, the laterally projecting heads (cross-bridges) of the thick myosin myofilaments come in contact with the thin actin…
Correct answer: Length of H-zone decreases and might disappear - Length of A-band remains constant432. What is sarcomere?
- A. Part between two H lines
- B. Part between two A lines
- C. Part between two I bands
- D. Part between two Z lines
Explanation: A striated muscle fibre is bounded by sarcolemma. It shows alternating dark and light cross bands, the striations.
Correct answer: Part between two Z lines- A. Bony matter
- B. White fibrous cartilage
- C. Hyaline cartilage
- D. Areolar tissue
Explanation: Sternum is connected to ribs by hyaline cartilage (giving a shiny glass like appearance and gives flexibility and support at the joints).
Correct answer: Hyaline cartilage- A. Coracoid
- B. Arytenoid
- C. Pterygoid
- D. Atlas
Explanation: Pterygoid is a process that extends from sphenoid bone of skull to form a plate like structure.
Correct answer: Pterygoid- A. Cartilaginous joint
- B. Angular joint
- C. Gliding joint
- D. Fibrous joint
Explanation: Cartilaginous joint is present between ribs and sternum. It allows only limited movement.
Correct answer: Cartilaginous joint- A. Angular joint
- B. Hinge joint
- C. Pivot joint
- D. Saddle joint
Explanation: Pivot joint is present between atlas and the axis in humans. In this joint articular end of one bone is fixed while the other can rotate…
Correct answer: Pivot joint- A. Abductor
- B. Regulator
- C. Extensor
- D. Flexor
Explanation: Flexor muscle bends one part of a limb on another at a joint, e.g., biceps. It brings the fore arm towards the upper arm.
Correct answer: Flexor- A. 3 pairs
- B. 2 pairs
- C. 6 pairs
- D. 5 pairs
Explanation: There are twelve pairs of ribs which form the bony lateral walls of the thoracic cage.
Correct answer: 2 pairs- A. Femur
- B. Acetabulum
- C. Glenoid cavity
- D. Ilium
Explanation: The pectoral girdle lies on the posterolateral aspect of the upper region of the thorax. It consists of 2 bones : scapula and clavicle.
Correct answer: Glenoid cavity- A. Cartilaginous joint
- B. Hinge joint
- C. Fibrous joint
- D. Synovial joint
Explanation: Fibrous joint is present between the human skull bones. It does not allow movement because the bones are held firmly together by bundles…
Correct answer: Fibrous joint