Matching
A) Lumbar vertebrae
B) Axis
C) Atlas
D) Coccyx
E) Thoracic vertebrae
23) These bones have the thickest body (centrum) with short blunt spinous processes.
24) The fused rudimentary tailbone.
25) The bone that articulates with the occipital condyles.
26) These bones have articular facets for the ribs.
27) Allows the head to nod "yes."
28) Allows the head to shake "no."
23) A 24) D 25) C 26) E 27) C 28) B
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Answer the following statement(s) true (T) or false (F)
1. Somatic reflexes involve responses by skeletal, smooth, and cardiac muscles. 2. The stretch reflex is the tendency of a muscle to stretch when it is overcontracted. 3. The tendon reflex is the inhibition of a muscle's contraction that occurs when its tendon is excessively stretched. 4. The crossed extension reflex is the contraction of the extensors on one side of the body when the flexors are contracted on the other side.
Sympathetic splanchnic nerves are composed of
A. postganglionic sympathetic axons that did not synapse in a sympathetic trunk ganglion. B. preganglionic sympathetic axons that synapse in a sympathetic trunk ganglion. C. postganglionic sympathetic axons that synapse in a sympathetic trunk ganglion. D. preganglionic sympathetic axons that did not synapse in a sympathetic trunk ganglion. E. None of the choices is correct.
The four most common elements in the body are hydrogen, carbon, calcium, and oxygen
Indicate whether the statement is true or false.
Which of the following statements is INCORRECT?
a. The cutaneous membrane is a dry membrane exposed to air. b. The cutaneous membrane is made of a simple columnar epithelium c. Serous membranes line body cavities and organs. d. Mucous membranes line exits and entrances to the body.