This figure shows the muscles of the abdominal wall. What muscle or feature does number 3 indicate?
A. Linea alba
B. Rectus abdominis
C. Transversus abdominis
D. Internal oblique
E. External oblique
Answer: A
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You're holding a pose for a photograph. Your cheek muscles fatigue quickly from smiling, meanwhile your neck muscles feel fine from holding your head up. This is because your cheek muscles are predominantly type 2 muscle fibers.
Answer the following statement true (T) or false (F)
The function of microvilli, often seen on the apical membrane of transporting epithelia, is to
A) increase the toughness of the cell. B) increase the movement of extracellular fluid. C) increase the cell's surface area. D) increase the resistance of the cell to viruses. E) allow the cell to move through a fluid medium.
Mechanoreceptors in the utricle and saccule detect movement of the head in the vertical or horizontal planes. This affects _____ equilibrium.
Fill in the blank(s) with correct word
What hematopoietic growth factor controls red blood cell synthesis, and what organ releases it?
A) calcitonin, released by kidney B) transferrin, released by bone marrow C) erythropoietin, released by kidney D) oxytocin, released by posterior pituitary E) parathyroid hormone, released by parathyroid glands