Which of the following helps reduce internal reflection (scattering of light within the eye)?
a. sclera
b. choroid
c. blind spot
d. lens
e. iris
B
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Collections of nerve cell bodies outside the central nervous system are called ________
A) ganglia B) nerves C) tracts D) nuclei
Actions for which the sympathetic division of the ANS is responsible include
A) constriction of the pupils of the eyes. B) constriction of respiratory passages. C) acceleration of heart rate and increase in strength of cardiac contractions. D) increase in digestive activity and the rate of urine formation at the kidneys. E) All of the answers are correct.
Arteries carry blood away from the ventricles whereas veins carry blood toward the atria
Indicate whether the statement is true or false
What usually causes a myocardial infarction (heart attack)?
What will be an ideal response?