Sandwiched between the layer of circular and longitudinal muscle in the muscularis externa is the

A) muscularis mucosa.
B) myenteric plexus.
C) submucosa.
D) mucosa.
E) mesocolon.


B) myenteric plexus.

Anatomy & Physiology

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Action potentials are able to travel over long distances without decaying because

A) The axons are perfectly insulated, so no current is able to leak out. B) The action potential uses completely different ions than graded potentials. C) Once the electrical signal has passed threshold, it is impossible for the signal to decay. D) One action potential generates the next one in an adjacent area of membrane.

Anatomy & Physiology

Define RNA viruses

What will be an ideal response?

Anatomy & Physiology

List the purposes of using an endotracheal tube during general anesthesia

What will be an ideal response?

Anatomy & Physiology

Which of the following muscles is especially important when doing pull-ups?

A. Coracobrachialis B. Triceps brachii C. Pectoralis major D. Teres major E. Latissimus dorsi

Anatomy & Physiology