Locomotion And Movement Question 5

Question: Which of the following match is incorrect?

Options:

A) 8th, 9th and 10th pairs of ribs - Do not articulate directly with the sternum but join the sixth rib with the help of hyaline cartilage.

B) Glenoid cavity - Articulates with the head of the humerus to form the shoulder joint.

C) Fibrous joint - Flat skull bones which fuse end-to-end with the help of dense fibrous connective tissues in the form of sutures to form the cranium.

D) Increase in $ C{a^{++}} $ level - Leads to the binding of calcium with a subunit of troponin on actin filaments and thereby remove the masking of active sites for myosin.

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Answer:

Correct Answer: A

Solution:

[a] 8th, 9th and 10th pairs of ribs (called false ribs) do not articulate directly with the sternum but join the seventh rib with the help of hyaline cartilage.