Question

Body movements occur when muscles contract across joints. The skeletal muscle activity in our body holds true for which of the following statements?
A. With a few exceptions, all skeletal muscles cross at least one joint.
B. Skeletal muscles can only push; they never pull.
C. During contraction, a skeletal muscle insertion moves towards the origin.
D. Typically, the bulk of a skeletal muscle lies proximal to the joint crossed.
E. All skeletal muscles have at least two attachments, the origin and the insertion.

• A. A, C and D only
• B. A, B, C, D and E
• C. A, C, D and E only
• D. A, B and E only

Hint:

Muscles always pull (never push) — insertion moves towards origin during contraction.

Answer 1

The Correct Option is C

Step 1: Statement A.
Correct — Most skeletal muscles cross at least one joint.
Step 2: Statement B.
Incorrect — Muscles only pull during contraction; they do not push.
Step 3: Statement C.
Correct — During contraction, insertion moves towards the origin.
Step 4: Statement D.
Correct — The bulk of muscle mass lies proximal to the joint crossed.
Step 5: Statement E.
Correct — Muscles have at least two attachments: origin and insertion.
Step 6: Conclusion.
The true statements are A, C, D, and E only.