Chapter 18 Part 1 Flashcards Preview

Anatomy > Chapter 18 Part 1 > Flashcards

Flashcards in Chapter 18 Part 1 Deck (13):
1

Involuntary controls glands, smooth and Cardiac muscle -2 motor neurons extending from CNS to effector -excitatory or inhibitory

Ans (automatic)

2

Preganglionic neuron from CNS synapses with postganglionic neuron in automatic ganglion

Ans motor neurons 1

3

Postganglionic neuron extends from automatic ganglion to effector

Ans motor neuron 2

4

Sympathetic "fight "or "flight"and parasympathetic "rest" and "digest"

Ans divisions

5

____ have dual innervation; supplied by both divisions s and p have opposite effects

Most Organs

6

Formed by sympathetic preganglionic neurons that originate at spinal cord levels t1-l2 widespread effect; short preganglionic neurons synapse with many long postganglionic neurons in ganglia all effectors except the adrenal gland are controlled by postganglionic neurons

Sympathetic division or thorocolumnar division

7

Consists of two types of ganglia sympathetic trunk (chain) preverteble ganglia

Sympathetic division

8

Located on both sides of vertebral column- consists of white rami; entry point to the trunk formed by preganglionic sympathetic neurons at t1-l2 cord levels grey rami; exit points for trunks found in all 31 spinal nerves outnumber white rami

Sympathetic trunk (chain)

9

Anterior to vertebral column near abdominal arteries

Prevertable ganglia

10

Formed by parasympathetic preganglionic neurons that originated not brain stems as cranial nerves III, VII,IX,X and spinal cords levels s2-s4

Parasympathetic division or cranial sacral division

11

Carries 80% of outflow

Vagus nerve x

12

Long preganglionic neurons with a few short postganglionic neurons in terminal ganglia located close to or within effector

Localized effect (parasympathetic division)

13

Voluntary controls skeletal muscles - consists of two motor neurons -extending from CNS to effector -always excitatory

Sns( somatic)