What is a normal heart rate for healthy adults at rest, and what neural inputs contribute to the achievement of that range? How is heart rate affected when all nervous system input to the heart is blocked, and why is this effect seen?
What will be an ideal response?
A typical adult heart rate is 70 beats per minute. This normal resting value results from the constant parasympathetic inhibition of the higher endogenous rate of the SA node. Without neural input, resting heart rate is higher, matching the intrinsic rate of the SA node, 90-100 beats per minute.
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Of the four major types of membranes, the one consisting of dense connective tissue
overlying loose connective tissue is A) synovial membrane. B) mucous membrane. C) serous membrane. D) cutaneous membrane.
Which term describes bending a body part anteriorly?
A. Abduction B. Extension C. Flexion D. Adduction
The perforating canals of osteons extend roughly perpendicular to the surface of a bone.
a. true b. false