The passageway through the digestive tube is called the ________.

Fill in the blank(s) with the appropriate word(s).


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Anatomy & Physiology

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A G protein is

A.  a type of water-soluble hormone. B.  a second messenger activated by a steroid hormone. C.  a molecule that binds a guanine nucleotide and helps transduce a signal inside a target cell. D.  a receptor for a water-soluble hormone that causes arachidonic acid to be extracted from a phospholipid. E.  an enzyme that catalyzes the conversion of ATP into cyclic AMP.

Anatomy & Physiology

Immediately following the arrival of a stimulus at the skeletal muscle cell there is a short period called the ________ period

A) relaxation B) contraction C) latent D) refractory

Anatomy & Physiology

The groove separating the greater and lesser tubercles of the humerus is the ____________________ groove.

Fill in the blank(s) with the appropriate word(s).

Anatomy & Physiology

Shortly after birth, the foramen ovale of the fetal heart ceases to function as an open pathway for blood

Indicate whether this statement is true or false.

Anatomy & Physiology