The esophagus is a tube that carries food from the mouth to the stomach. It does not secrete any enzymes or absorb any nutrients, but it does need to stand up to significant friction and stress. The type of epithelium most likely lining the esophagus would be:

A) stratified squamous epithelium.
B) cuboidal epithelium.
C) simple squamous epithelium.
D) transitional epithelium.
E) simple columnar epithelium.


A) stratified squamous epithelium.

Anatomy & Physiology

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Air that remains in conducting passages and doesn't participate in gas exchange is termed

A) vital capacity. B) minimal volume. C) residual volume. D) functional residual capacity. E) anatomic dead space.

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Contraction of which muscle normally accounts for around 75% of the air movement in normal quiet breathing?

A) diaphragm B) rectus abdominis C) internal intercostals D) external intercostals E) internal obliques

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What is happening in the heart when a P wave is recorded on an ECG?

A. The ventricles are depolarizing. B. The atria are depolarizing. C. The ventricles are repolarizing. D. The ventricles are contracting. E. Ventricular systole is occurring.

Anatomy & Physiology

Which vertebra does not have a body?

A) atlas B) last lumbar C) last cervical D) axis

Anatomy & Physiology