The ventral and dorsal rami are branches of _____.

a. a spinal nerve
b. spinal plexuses
c. the spinal cord


Ans: a. a spinal nerve

Anatomy & Physiology

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The following structures of the mammalian nervous system, from posterior to anterior are laid out in the following order:

A) Spinal cord, medulla oblongata, pons, cerebellum. B) Spinal cord, pons, cerebellum, medulla oblongata. C) Medulla oblongata, spinal cord, cerebellum, pons. D) Pons, cerebellum, spinal cord, medulla oblongata.

Anatomy & Physiology

The principal cation in cytoplasm is

A) sodium. B) potassium. C) calcium. D) magnesium. E) chloride.

Anatomy & Physiology

The "dark current" of photoreceptors refers to

A.  the exit of Na+ and Ca2+ out of  the cell when light is not hitting the cell. B.  the entry of Na+ and Ca2+ into the cell when light is not hitting the cell. C.  the entry of K+ into the cell when light is not hitting the cell. D.  the exit of K+ out of  the cell when light is not hitting the cell.

Anatomy & Physiology

What units of light stimulate photoreceptor cells in the retina?

What will be an ideal response?What will be an ideal response?

Anatomy & Physiology