Which of the following would contribute to muscular fatigue in the muscle fiber?
A. the emotional state of an individual
B. depletion of ATP reserves
C. inability of the motor neuron to produce sufficient quantities of acetylcholine
D. depletion of neurotransmitter
E. blocked receptors in the postsynaptic membrane
B
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Answer the following statements true (T) or false (F)
1. General sense organs are characterized by large complex organs or localized groupings of specialized receptors. 2. One of the main functions of a sense organ is to change a physical stimulus into an electrical signal. 3. General sense organs are found throughout the body but are most concentrated in the internal organs. 4. Specialized receptors found near the point of junction between tendons and muscles are called mechanoreceptors. 5. Muscle spindles can be classified as proprioceptors.
A "benign tumor" refers to
A) any of various malignant neoplasms. B) neoplasms that have the tendency to metastasize to new sites. C) an illness characterized by malignant cells. D) abnormal cells remaining in one place. E) nonviable cells and/or tissue.
Sympathetic stimulation of cholinergic fibers in the arterioles of skeletal muscle will produce ________.
A. vasodilation B. no effect C. vasoconstriction
Hormones of the posterior lobe of the pituitary are synthesized in neuronal cell bodies of the hypothalamus and transported to the pituitary by axonal transport.
Answer the following statement true (T) or false (F)