This is the most common type of cell in connective tissue proper:
a. keratinocyte
b. osteocyte
c. fibroblasts
d. red blood cell
Answer: c. fibroblasts
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The superior orbital fissure is formed in the sphenoid bone, whereas the inferior orbital fissure is formed between the sphenoid and ________
A) maxilla B) lacrimal C) palatine D) ethmoid
Bedding for all rodents should be ___________________ free
Fill in the blank(s) with correct word
This pair of muscles includes the prime mover of inspiration, and its synergist
A) external intercostals and internal intercostals B) sternocleidomastoid and external intercostals C) pectoralis minor and internal intercostals D) diaphragm and external intercostals
Which of the following statements about the response of arteriolar smooth muscle to changing oxygen partial pressures is TRUE?
A. Both systemic and pulmonary arterioles respond to a decrease in PO2 by constricting. B. Both systemic and pulmonary arterioles respond to a decrease in PO2 by dilating. C. Systemic arterioles respond to a decrease in PO2 by dilating, but pulmonary arterioles constrict in response to decreased PO2. D. Systemic arterioles respond to a decrease in PO2 by constricting, but pulmonary arterioles dilate in response to decreased PO2. E. Changes in PO2 do not affect arteriolar smooth muscle in the pulmonary system.