An action potential in the motor end plate rapidly spreads to the interior regions of a muscle cell by means of the:
A. Z lines.
B. sarcoplasmic reticulum.
C. H zone.
D. transverse tubules.
E. pores in the plasma membrane.
D
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Which of the following is a function of the oral cavity?
A) Nutrient absorption B) Peristalsis C) Protein digestion D) Starch digestion
Normally most of the blood at any one time is in the capillary beds, because this is where material exchange is taking place
Indicate whether the statement is true or false
A myofilament is the
A. contractile thread that extends the length of the muscle fiber. B. structural and functional unit of the skeletal muscle fiber. C. plasma membrane of a muscle fiber. D. protein strand composed of actin or myosin. E. cytoplasm of a muscle fiber.
Which of the following feelings is NOT related to hypothalamic function?
A. Sexual pleasure B. Feeling rested after flying to England C. Road rage D. Fear of the unknown E. Feeling satiated after a meal