In man,the thoracic basket is composed of:

The skeletal system provides support and protection to body parts. Which of the following bones is distinct in its function?

Read the following Assertion $(A)$ and Reason $(R)$ and choose the correct option.
Assertion $(A):$ All $12$ pairs of ribs are called bicephalic.
Reason $(R):$ Each rib is connected dorsally to the vertebral column by $2$ heads of articulation.

What are $P$ and $Q$ in the given bones?
$\quad \quad P\quad \quad \quad Q$

In rabbit,the axis vertebra is identified by:

The synsacrum of a fowl consists of about how many vertebrae?