The cap on a spermatozoa containing enzymes to penetrate the ova is called a(n) __________.

Gametes or germ cells are __________.

RBCs flow through these vessels in single file because their diameter is so small.

__________ dissolve bone, putting calcium into the blood stream.

Sudoriferous glands open into hair follicles.

Match the organelle with its appropriate function.

The urethra is shorter in men than in women.

Which of the following best describes false ribs?

Air-filled gas pockets where gas exchange occurs are called __________.

Floating ribs are also considered false ribs.