Which cells of the stomach produce and secrete hydrochloric acid (HCl)?

All formed elements are derived from cells in the bone marrow called ______.

Peyer's patches are mucosa-associated lymphoid tissue located in the __________.

In eukaryotic muscle cells, the transverse tubules (T-tubules) are located between which structures called cisternae?

The lamina propria is composed of which type of tissue?

In the sheep brain, what is the primary function of the optic chiasm?

What are the stratified follicular cells surrounding an oocyte called?

The primary blast cell for bone is the ________.