Sensory receptors sense only stimuli external to the body, such as light, sound waves, smell, and touch.
Answer the following statement true (T) or false (F)
False
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Which structure allows axons to cross over to the contralateral side of the spinal cord?
A. Posterior ramus B. Anterior median fissure C. Gray commissure D. Communicating rami
Which of the following is(are) the only factor(s) that can be adjusted by the nervous or endocrine system to regulate blood flow?
A) vascular resistance B) turbulence C) viscosity D) vascular resistance and viscosity E) turbulence and viscosity
Veins are defined as blood vessels that
a. carry deoxygenated blood. b. connect multiple capillary beds. c. function in returning blood to the heart. d. carry oxygenated blood. e. function in carrying blood away from the heart.
Genetic disorders like Down syndrome are caused by ________.
A. genes on the X-chromosome; females express this less often than males B. a dominant allele, that if passed on by one or both parents, causes disease C. errors in meiosis that cause a gamete to receive an extra chromosome D. a recessive allele, that if passed on by both parents, causes disease