Which is TRUE during the luteal phase of the menstrual cycle?
A. Both estrogen and progesterone concentrations are kept low by negative feedback.
B. Estrogen concentration remains low, while progesterone concentration rises to a peak.
C. Progesterone concentration remains low, while estrogen concentration rises to a peak.
D. Progesterone concentration in the plasma is high, but estrogen concentration rises even higher.
E. Estrogen concentration in the plasma is high, but progesterone concentration rises even higher.
E
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The absorptive effectiveness of the small intestine is enhanced by increasing the surface area of the mucosal lining. Which of the following accomplish this task?
A) the vast array of digestive enzymes B) the rugae and haustra C) villi, and microvilli D) Brunner's glands and Peyer Patches
Water loss via active sweating onto the surface of the skin and subsequent evaporation is ________ perspiration.
Fill in the blank(s) with the appropriate word(s).
Cardiac muscle, smooth muscle, most exocrine glands, some endocrine glands, and adipose tissue are innervated by the ____
a. somatic nervous system b. sensory-somatic nervous system c. autonomic nervous system d. cranial nerves e. sacral plexus
Place the following structures in order as food passes into them. 1. cecum 2. duodenum 3. ileum 4. jejunum 5. stomach
A) 1, 3, 4, 2, 5 B) 5, 1, 2, 4, 3 C) 2, 5, 4, 3, 1 D) 3, 1, 2, 5, 4 E) 5, 2, 4, 3, 1