The most superficial layer of the muscularis externa muscle in the stomach is the:

a. oblique layer
b. circular layer
c. longitudinal layer
d. muscularis mucosa


Answer: c. longitudinal layer

Anatomy & Physiology

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Imagine a genetic mutation that resulted in a malfunctioning inactivation gate in a voltage-gated sodium channel. The defective gate wouldn't always open and close when it should. What functional problems would this cause for the neurons?

What will be an ideal response?

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The lower limit of resolution of a light microscope is ________.

A. 100?m B. 10?m C. 0.1?m D. 0.01?m E. 1.0?m

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The type of muscle that is found in blood vessel walls is ________ muscle.

A. skeletal B. smooth C. cardiac

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During the steps of glycolysis, ________ ATPs, ________ NADHs, and ________ molecules of pyruvate are produced.

A. 4; 6; 8 B. 3; 4; 5 C. 6; 4; 2 D. 2; 4; 6 E. 4; 2; 2

Anatomy & Physiology