Which of the following is a sympathetic effect?

John sees Martha; the pupils of his eyes dilate. It is “love at first sight.” What division(s) of the ANS is(are) involved?

Sympathomimetic agents activate

Sympathomimetic agents activate

Which of the following statements concerning the structure of spinal nerves is true?

The photoreceptors in the photoreceptor layer of the retina face the vitreous chamber.

What is found the lateral gray horns of the spinal cord?

Sally has elevated levels of blood calcium.  What chemical would you expect to find in high levels in response to this condition?

Which of the following events in a stretch reflex occurs last?

The component of the autonomic reflex arc that detects a change in stimulus is the