The sternum is part of the ________ skeleton.
A. appendicular
B. axial
Answer: B
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What is the general function of an excitable membrane?
A) Excitable membranes allow ions to leak across ion channels. B) Excitable membranes are on cells with extracellular receptors for binding chemicals. C) Excitable membranes permit rapid communication between different parts of a cell. D) Excitable membranes function when the intracellular fluid and extracellular fluid compositions match. E) Excitable membranes function in slow, endocrine cell-cell communication.
Lymph originates in blood capillaries that pick up tissue fluid.
Answer the following statement true (T) or false (F)
The rarest leukocyte is the ________.
Fill in the blank(s) with the appropriate word(s).
Which is a TRUE statement about events occurring in the menstrual cycle?
A. The corpus luteum normally degenerates on day 14 of the cycle. B. Ovulation occurs exactly in the middle of the follicular phase of the cycle. C. FSH reaches its highest concentration 3 days before menstruation begins. D. Progesterone is low during the first half of the cycle, and rises to a peak during the second half. E. Each peak in estrogen concentration is accompanied by an even greater peak in progesterone concentration.