The integumentary system is composed of the skin, hair, nails, and glands. It serves as a protective barrier for the body, regulates body temperature, and enables sensory perception. The skin, being the largest organ, is a key part of the integumentary system and plays a major role in protecting the body from external environmental factors.
Match the following:
List–I | List–II |
---|---|
A. Ball and socket joint | I. Inter carpal joint |
B. Hinge joint | II. Between humerus and Pectoral girdle |
C. Pivot joint | III. Between carpals and metacarpals |
D. Gliding joint | IV. Between atlas and axis |
V. Knee joint |
In the adjoining figure, \( AP = 1 \, \text{cm}, \ BP = 2 \, \text{cm}, \ AQ = 1.5 \, \text{cm}, \ AC = 4.5 \, \text{cm} \) Prove that \( \triangle APQ \sim \triangle ABC \).
Hence, find the length of \( PQ \), if \( BC = 3.6 \, \text{cm} \).