The tail of a spermatozoa is called a cilia.

These photoreceptors are located in the center of the retina and allow one to see sharper images in daylight.

Correctly match the following, using each answer only once.

The tail of a spermatozoa is called a cilia.

The forward movement of food by muscle constriction is called __________.

__________ arterioles carry blood TO the glomerulus; whereas __________ arterioles carry blood FROM the glomerulus.

__________ build bone, taking calcium out of the blood stream and putting it back into the bone.

__________ build bone, taking calcium out of the blood stream and putting it back into the bone.

__________ glands secrete hormones internally; whereas __________ glands secrete onto an epithelial surface.

With reference to the collecting tubules: __________ is removing water from the tubules and returning it to the venous system.