Tight junctions between ________ are responsible for the formation of the blood-testis barrier.
A. Sertoli cells
B. spermatogonial cells
C. trophoblast cells
D. Leydig cells
Answer: A
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Both the alveoli and lung capillaries have walls of simple squamous epithelium.
Answer the following statement true (T) or false (F)
When ligand-gated __________ open, ions move in or out of the cell, affecting the membrane potential
Fill in the blank with the correct word.
During the inflammatory response, ________.
A. vascular permeability is decreased B. vasoconstriction occurs C. blood flow is reduced D. chemical mediators are released E. neutrophil production is depressed
Ghrelin is secreted by _______________, and increases ________________ while decreasing _________________
A. cells in the stomach; neuropeptide Y secretion; appetite B. adipose tissue; growth hormone secretion; leptin secretion C. muscle tissue; appetite; growth hormone secretion D. cells in the stomach; appetite; fat breakdown E. adipose tissue; appetite; fat breakdown