Which type of membrane forms the outer covering of the body?

Correct Answer: C

Rationale: Cutaneous membrane (skin) is the body's outer protective layer.

Correct Answer: A

Rationale: The Eustachian tube is part of the middle ear, not the inner ear.

Correct Answer: C

Rationale: The spleen is often referred to as the 'graveyard' of red blood cells (RBCs) because it removes old or damaged RBCs.

Correct Answer: D

Rationale: The ciliary body is an extension of the choroid layer of the eye.

Correct Answer: B

Rationale: One function of membrane proteins is to receive(amino acid based) hormones that cannot pass through the plasma membrane.