Grasshopper Mice _______ and Laboratory Mice _______ in Response to the Scorpion

question 85

Multiple Choice

Grasshopper mice _______ and laboratory mice _______ in response to the scorpion toxin.

• A) probably feels the initial sting; feel a long slow burn
• B) probably are immune to all pain; feel only the initial sting
• C) have Na_v1.8 channels that open; have Na_v1.8 that are blocked
• D) experience sustained firing of nociceptors; also experience sustained firing of nociceptors

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Definitions:

Coronary Sulcus

A groove on the surface of the heart marking the division between the ventricles and the atria.

Anterior Interventricular Sulcus

A groove on the heart's surface that marks the boundary between the left and right ventricles and contains blood vessels that supply the heart muscle.

Papillary Muscles

Muscles located in the ventricles of the heart that attach to the cusps of the atrioventricular valves via the chordae tendineae and help prevent valve inversion.

Apex

The top or highest part of something, often pointed; used in various anatomical contexts.