According to its definition, muscle fatigue is ________
A) the physiological inability of a muscle to contract
B) a muscle that begins to "burn" as you exercise
C) an irreversible condition brought about by strong stimulus to a muscle
D) a tired muscle
Answer: A
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A highly sensitive tactile receptor composed of dendritic processes of a single myelinated fiber that makes contact with specialized cells of the stratum basale is a
A) lamellar corpuscle. B) tactile (Meissner) corpuscle. C) Bulbous corpuscle. D) tactile (Merkel) disc. E) root hair plexus.
The _____ nervous system consists of the brain and spinal cord
Fill in the blank(s) with correct word
How would the loss of acetylcholinesterase from the motor end plate affect skeletal muscle?
A) It would make the muscles less excitable. B) It would produce muscle weakness. C) It would cause spastic paralysis (muscles are contracted and unable to relax). D) It would cause flaccid paralysis (muscles are relaxed and unable to contract). E) It would have little effect on skeletal muscles.
What explains the dramatic acceleration in lengthwise bone growth at puberty?
A. Increased activity of osteoclasts occurs in response to parathyroid hormone stimulation. B. Increased rate of calcium deposition occurs due to high blood calcium levels. C. Increased physical activity causes lengthwise growth in response to bone stress. D. Increased secretion of sex hormones promotes epiphyseal plate growth. E. Increased absorption of dietary vitamins and minerals strengthens the matrix.