Transcription:

Diffusion of nutrients and gases primarily occurs in the __________.

Arteries have a thicker middle layer than veins because they are under lower pressure.

Blood supply into the kidneys are via the __________, while the __________ drains blood from the kidneys.

The building blocks of DNA are __________.

The 3 ossicles of the middle ear are called:

When there is not a high enough level of blood glucose, the __________ pancreas secretes __________.

Isometric contraction is when muscle tension rises but the muscle does not change length.

Exocrine glands have ducts that discharge secretions.

The alternative name for C-1 is __________.