Oxidative fibers are
A. red and fatigue-resistant.
B. red and fatigable.
C. white and fatigue-resistant.
D. white and fatigable.
A
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This structure physically separates the pelvic cavity from the abdominal cavity.
a. mediastinum b. diaphragm c. mesenteries d. none of the above
How does the reproductive system contribute to osteoporosis?
A. Excessive smoking lowers estrogen levels, which increases bone loss. B. Immune cells decrease in number after puberty and reduce bone repair. C. Decreased estrogen levels following menopause contribute to the disease. D. Calcium ions released from the bones are necessary for gamete production. E. Lack of sex hormone production reduces vitamin D production and decreases calcium absorption.
The three types of connective tissue include
A) connective tissue proper, fluid connective, and supporting connective. B) epithelial, muscle, and neural. C) glandular, exocrine, and endocrine. D) ectoderm, mesoderm, and endoderm. E) All of the answers are correct.
Arrange the events of synaptic transmission in correct sequence
(1) sodium ions diffuse into the cell and cause a local potential (2) neurotransmitter binds with receptor on postsynaptic cell (3) neurotransmitter diffuses across the synaptic cleft (4) membrane permeability to sodium ions on postsynaptic cell increases (5) action potential causes release of neurotransmitter A. 5, 2, 3, 4, 1 B. 5, 2, 3, 1, 4 C. 5, 3, 4, 1, 2 D. 5, 4, 3, 2, 1 E. 5, 3, 2, 4, 1