A&P Test 2 Lecture 6

Question 1

Efferent (motor) Neurons

Answer 1

Neurons that carry impulses away from the CNS out to the motor effectors.

Question 2

Somatic Motor Neurons

Answer 2

Control skeletal muscle contraction

Question 3

Automatic Motor Neurons

Answer 3

Control involuntary effectors including cardiac muscle, smooth muscle, exocrine and endocrine glands, and some adipose tissue.

Question 4

Pupillary Reflexes

Answer 4

pupil diameter changes due to contraction of the smooth muscle within the iris to control the amount of light entering the eye.

Question 5

Mydriasis

Answer 5

is the dilation of pupil in response to pain, emotional excitement, and dm light. Contraction of radial muscle fibers of iris.

Question 6

Miosis

Answer 6

construction of pupil in response to increased light. Contraction of circular muscle fibers of the iris, which is controlled by parasympathetic division.

Question 7

Sympathetic Division

Answer 7

division of the ANS. “Thoracolumbar division” the emergency or flight of fight division.

Question 8

Parasympathetic Division

Answer 8

division of ANS . the rest and repair or rest and digest division.

Question 9

Autonomic Ganglia

Answer 9

have cell bodies in them that extend to nearby effectors during parasympathetic division.

Question 10

Preganglionic Neurons

Answer 10

Neurotransmitters of ANS that secrete acetylcholine

Question 11

Postganglionic neurons

Answer 11

can be paraympathetic: secrete Actetylcholine

Sympathetic: secrete norepinephrine

Question 12

Flight or fight response

Answer 12

response in an effort to prepare an animal for maximal skeletal muscle activity to either flee or fight a perceived threat.

Question 13

Alpha- Adrenergic Receptors

Answer 13

Respond most strongly to NE. Found in neuroeffector junctions.

Question 14

Beta Andrenergic Recetors

Answer 14

Three Types
Beta 1 Receptors: Regulating metabolic functions
Bets 2 Receptors: stimulate smooth muscle relaxation
Beta 3 Receptors: Fat breakdown