Which is a major function of the skeletal system?
A) maintenance of interstitial fluid composition
B) production of ATP
C) support of the body
D) storage of glucose
E) None of the answers are correct.
C) support of the body
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Formed primarily of tunica intima and strengthened by elastic and collagen fibers, the ________ in veins prevent blood from pooling.
Fill in the blank(s) with the appropriate word(s).
A headache that is related to changes in cerebral blood flow is classified as a/an __________ headache.
A) tension B) sinus C) migraine D) intracranial
Which of the following statements is FALSE?
A. Synaptic input onto skeletal muscle cells is always excitatory, whereas inputs to smooth muscle cells may be either excitatory or inhibitory. B. A single smooth muscle cell may be innervated by both a sympathetic neuron and a parasympathetic neuron. C. Contractile activity of smooth muscle cells does not normally require Ca2+. D. In the absence of any neural input, skeletal muscle cannot generate tension. E. Ca2+ that activates contraction of smooth muscles can come from either the ECF or from the sarcoplasmic reticulum.
Chemically, a radioactive isotope behaves the same way as the stable isotopes of a given element.
Answer the following statement true (T) or false (F)