Which muscle provides voluntary control of defecation?
A) external anal sphincter B) levator ani
C) deep transverse perineal muscle D) external urinary sphincter
Answer: A
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Why do people with Parkinson's disease experience resting tremors?
A. Damage to the cerebellum alternately activates agonist/antagonist muscle pairs. B. Acetylcholinesterase at neuromuscular junctions is inactivated. C. Activation of the sensorimotor cortex is reduced when the substantia nigra fails to deliver dopamine to the basal nuclei. D. Excess glutamate is released in the premotor areas of the motor cortex. E. Dopamine-secreting tumors directly activate alpha motor neurons.
Carbonic acid is referred to as _________ acid because it is produced from a gas that evaporates quickly
Fill in the blank with correct word.
What accounts for the most ATP production?
a. Kreb's cycle. b. Citric acid cycle. c. NADH. d. oxidative phosphorylation. e. glycolysis.
What are you resting your hands on when you rest them on your hips, just below the waist?
A. Ischial spines B. Arcuate lines C. Ischial tuberosities D. Iliac crests E. Superior gluteal lines