A molecule that is common to carbohydrate and lipid metabolic pathways and connects
these two pathways metabolically is
A) acetyl coenzyme A. B) glucose.
C) pyruvic acid. D) glycogen.
A
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Answer the following questions true (T) or false (F)
1. The central nervous system (CNS) processes sensory input and transmits the impulses through the peripheral nervous system (PNS) to effectors for motor output. 2. Cranial nerves and spinal nerves are the two types of nerves found in the peripheral nervous system (PNS). 3. The visceral motor division (autonomic nervous system, or ANS) controls the body's voluntary motor functions.
Which of the following statements about hormones is correct?
A. Anterior pituitary hormones are synthesized in the hypothalamus. B. All hormones secreted by the anterior and posterior pituitary glands are peptides. C. IGF-1 stimulates growth by increasing growth hormone secretion through positive feedback. D. All of the hypophysiotropic hormones are peptides. E. Only steroid hormones can regulate the secretion of steroid hormones.
The medial wall of the orbit is formed by the ethmoid and lacrimal bones.
Answer the following statement true (T) or false (F)
Which statement about the colon is incorrect?
a. Absorption of salt and water converts the colonic contents into fecal material. b. Colonic bacteria digest cellulose for their own growth and reproduction. c. Mass movements pack feces into the rectum and stimulate stretch receptors to cause contraction of both anal sphincters, which prevent defecation until an opportune time. d. No digestive enzymes are secreted by the colon. e. Haustral contractions are a type of mixing motility.