Human Anatomy & Physiology: Chapter 11 Flashcards


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1

nervous system

the master controlling and communicating system of the body

2

sensory imput

gathered information

3

integration

the nervous system processes and interprets sensory input and decides what should be done at each moment

4

motor output

nervous system causes a response called motor output by activating effector organs - the muscles and glands

5

effector organs

(Glandular or Muscle) receive or respond to Autonomic Nervous System (ANS) signals. Cardiac and smooth muscle, glandular tissue. Ex: Adrenal, Medulla

6

central nervous system consists of what

the brain and the spinal cord

7

peripheral nervouse system consists of

nerves (bundles of axons)

8

spinal nerves do what

carry imipulses to and from the spinal cord

9

cranial nerves do what

carry impulses to and from the brain

10

What part of the eye is called "the white of the eye"? Is it A) the sclera or B) the choroid?

the sclera. This opaque outer layer appears white due to the presence of collagen fibers.

11

which layer is the retina found? Is it the A) uvea or B) neural layer?

the neural layer. The retina contains the neural cells whereas the uvea contains the iris

12

Which iris color has more melanin? Is it A) green or B) blue?

A) green. Color variation is due to concentration and distribution of melanocytes. Blue has the least amount of melanin.

13

What are the protein fibers called that make up the lens? Are they A) collagens or B) crystallins?

crystallins. Collagen is important in the connective tissues and cornea. Crystallins appear in a precisely packed pattern in the lens.

14

What do we call the gel-like substance in the posterior chamber of the eyeball? Is it A) the aqueous humor or B) the vitreous body?

B) the vitreous body. The aqueous humor is the fluid in the anterior chamber.

15

Which photoreceptor cells are responsible for sharp vision? Is it A) the rods or B) the cones?

B) the cones. The cones are stimulated by color and intense light.

16

Which neural cells regulate action potential generation in the eye? Is it A) the ganglion cells or B) the bipolar cells?

the bipolar cells. They regulate action potentials of the ganglion cells based on stimulation of the rods and cones