Question

Which one of the following is a characteristic feature of the class Mammalia?
(A) Pneumatic bones (B) Synsacrum
(C) Seven lumber vertebrae (D) Seven cervical vertebrae​

Answer 1

Answer:

D) Seven cervical vertebrae

Explanation:

The number of cervical vertebrae is 7 in almost all mammals including humans.

Answer 2

Answer:

The correct answer for the given question is Option (C). The seven cervical vertebrae is the features of the class Mammalia.

Explanation:

• The seven cervical vertebrae is the features of the class Mammalia which is the “cervical vertebrae” (C1-C7).
• There are eight cervical nerves C1-C8. The cervical nerves emerges to the corresponding vertebrae, while c8 nerve  that emerges “below the C7 vertebra”.
• The cervical vertebrae is support for such system.

• They form the platform for stability and flexibility.

• If created in space or bone dislocation, it leads to several conflicts like reflex action issue.