When a sensory neuron is excited by some form of energy, the resulting graded potential is called a(n) ________.
A) postsynaptic potential
B) excitatory potential
C) action potential
D) generator potential
D) generator potential
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Substances enter renal tubules from the blood through the processes called ________________ and __________________; whereas, substance leave the kidney tubules and enter the blood through the process called ____________________
Fill in the blank(s) with correct word
Regarding lactation and the mammary glands, which statement is true?
A) Colostrum contains more proteins than breast milk. B) An expectant mother's mammary glands begin producing colostrum by the end of the second month of pregnancy. C) As colostrum production increases, the mammary glands convert to milk production. D) Colostrum, unlike milk, contains large quantities of lysozymes. E) Colostrum has much more fat than breast milk.
Blood is moved through the vascular system by
A. valves in the wall of the blood vessels. B. peristalsis caused by smooth muscle in the blood vessel walls. C. pressure gradients created by the heart. D. osmotic pressure. E. viscosity of the blood.
Blood flow to the heart wall courses through coronary vessels in a steady stream.
Answer the following statement true (T) or false (F)