Identify the correct pair of vestigial organs?

C. Ear Muscles & Vermiform appendix

D. Nictitating membrane & Kidney

Fibroblasts secrete ?

D. Proteins for connective fibers

B. Antibodies for immune defense

C. Hormones for growth regulation

D. Proteins for connective fibers

Everyday Science · Body Systems (Human Biology) · page 5 of 16

Skeletal & Muscular Systems MCQs with Answers

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Skeletal & Muscular Systems MCQs (41–50)

10 MCQs with answers and a short one-liner. Hide answers to test yourself.

Past paper MCQs in this chapter · See all past papers

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41.
Bone is surrounded by a membrane called?
Correct Answer: C. Periosteum
One-liner
Bone is surrounded by a tough, fibrous membrane called the Periosteum.
42.
The pair of muscles where both work in opposite direction is called?
Correct Answer: B. Antagonist
One-liner
The pair of muscles that work in opposite directions is called antagonist muscles.
43.
What is the main chemical substance present in the bones and teeth of animals?
Correct Answer: B. Calcium phosphate
One-liner
The main chemical substance present in the bones and teeth of animals is calcium phosphate.
44.
Which is the common feature between cardiac and smooth muscles?
Correct Answer: C. Involuntary
One-liner
The common feature between cardiac and smooth muscles is that both are involuntary in nature.
45.
Brain is protected by?
Correct Answer: B. Skull
One-liner
The brain is protected by the skull, a bony structure that forms the cranium.
46.
Past Paper MCQ
The number of bones in a newborn baby is ?
Correct Answer: B. 300
One-liner
A newborn baby has approximately 300 bones, which later fuse to form 206 bones in an adult.
47.
A fully opposable thumb is present in _?
Correct Answer: C. Both A and B
One-liner
A fully opposable thumb is present in both humans and apes.
48.
Identify the correct pair of vestigial organs?
Correct Answer: C. Ear Muscles & Vermiform appendix
One-liner
The correct pair of vestigial organs is Ear Muscles & Vermiform appendix.
49.
Fibroblasts secrete ?
Correct Answer: D. Proteins for connective fibers
One-liner
Fibroblasts secrete proteins for connective fibers, such as collagen and elastin, which provide structural support to tissues.
50.
The protein that accumulates in claws, horse hooves, and nails is _?
Correct Answer: C. Keratin
One-liner
The protein that accumulates in claws, horse hooves, and nails is Keratin.

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Skeletal & Muscular Systems MCQs with Answers

Skeletal & Muscular Systems MCQs (41–50)

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