Which of the following are modified smooth muscle cells around the glomerulus that contract to
A) mesangial cells
B) granular cells
C) endothelial cells
D) podocytes
E) macula densa cells
Ans: A) mesangial cells
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The alpha-helix and beta-pleated sheet are characteristic of:
A) primary protein structure. B) secondary protein structure. C) tertiary protein structure. D) quaternary protein structure.
The epithelial cells that are flat, thin and have one layer are called
A) simple cuboidal. B) simple squamous. C) stratified cuboidal. D) simple columnar. E) stratified squamous.
Which body feature do ultramarathon runners count on to give their muscles fuel for endurance?
A. Richer blood supply B. Stronger long bones C. Toned ligaments and tendons D. Healthy cartilage
Evaluate the pulmonary pressures provided, and determine what portion of the respiratory cycle is represented. Transpulmonary pressure = 6 mmHg Intrapleural pressure = 667 mmHg Atmospheric pressure = 670 mmHg Intrapulmonary pressure = 673 mmHg
A. Thoracic volume increase with lung collapse B. Normal expiration C. Normal inspiration D. Lung volume is unchanged