When two pairs of electrons are shared between two atoms, a ________ bond is formed.
A. quadruple ionic
B. double covalent
C. double ionic
D. single covalent
Answer: B
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Impulses that the vagus nerve carries to the heart
A. are sympathetic and increase heart rate. B. are parasympathetic and decrease heart rate. C. are sympathetic and decrease heart rate. D. are parasympathetic and increase heart rate.
Contrast the descriptions used by clinicians and anatomists when referring to the positions of injuries or internal organs of the abdomen and pelvis
A) Clinicians base their descriptions on a person lying in a prone position, whereas anatomists use a person lying in a supine position. B) Clinicians base their descriptions on a person lying in a supine position, whereas anatomist use a person lying in a prone position. C) Clinicians base their descriptions on four abdominopelvic quadrants, whereas anatomists use nine abdominopelvic regions. D) Clinicians base their descriptions on nine abdominopelvic regions, whereas anatomists use four abdominopelvic quadrants. E) Clinicians base their descriptions on superficial anatomical terms, whereas anatomists use regional anatomical terms.
Gustatory receptors are found in the taste buds of all the following papillae except
A) vallate. B) foliate. C) fungiform. D) filiform.
Infoldings in the sarcolemma called __________ tubules conduct electrical currents to the interior of the cell.
Fill in the blank(s) with the appropriate word(s).