ANS, Hypothalamus, & Limbic System

Question 1

Term: Primary control of ANS

Answer 1

Hypothalamus

Question 2

Functions of the ANS

Answer 2

Regulates activity of internal organs and vasculature (like a thermostat)

• circulation, respiratin, digestions, metabolism, secretions, body temperature, reproduction

Question 3

Type of Receptor: Responds to pressure and stretch

Answer 3

Mechanorecptor

Question 4

Type of Receptor: Located in the aortic arch, carotid sinuses, and lungs

Answer 4

Mechanoreceptor

Question 5

Type of Receptor: Sensitive to chemical concentration in blood

Answer 5

Chemoreceptors

Question 6

Type of Receptor: Located in the carotid and aortic bodies, medulla, hypothalamus, stomach, taste buds, and olfactory bulbs

Answer 6

Chemoreceptors

Question 7

Type of Receptor: Most responsive to stretch and ischemia

Answer 7

Nociceptors

Question 8

Type of Receptor: Located in the viscera and walls of arteries

Answer 8

Nociceptors

Question 9

Type of Receptor: In hypothalamus and responds to small changes in temperature

Answer 9

Thermoreceptors

Question 10

2 Afferent Pathways to enter the CNS

Answer 10

1. Spinal cord via dorsal roots
2. Brainstem via CN VII, IX, X (all transmit taste, later 2 from viscera)

Question 11

Describe Central Regulation

Answer 11

Visceral infromation enters the brainstem via CN and converges on the solitary nucleus in the medulla

Information from the solitary nucleus is relayed to visceral control areas in pons/medulla

It’s then relayed to modulary areas to regulate the activity of areas that direclty control a particular function (hypothalmus, thalamus, limbic system)

Question 12

Structure: Regulates HR, respiration, vasoconstriction/dilation

Answer 12

Medulla

Question 13

Nerves: Pathways medulla uses for regulation

Answer 13

Autonomic efferents in SC

Vagus n.

Question 14

Structure: Regulates respiration

Answer 14

Pons

Question 15

Structures: Modulate brainstem autonomic control

Answer 15

Hypothalamus

Thalamus

Limbic System

Question 16

Structure: Influences cardiorespiratory, metabolic, water reabsorption, digestion

Answer 16

Hypothalamus

Question 17

Structure: Where visceral information is sent

Answer 17

Thalamus

Question 18

Structure: Overseer of homeostasis and ANS

Answer 18

Hypothalamus

Question 19

Structure: Provides input important for you circadian rhythm

Answer 19

Retina

Question 20

Structure: Emotion and memory functions; influences motor and autonomic output via emotion

Answer 20

Limbic System

Question 21

5 Structures of the Limbic System

Answer 21

1. Hypothalamus
2. Nuclei of Thalamus
3. Limbic Cortex (cingulate gyrus, parahippocampal gyrus, uncus)
4. Hippocampus
5. Amygdala

Question 22

Structure: Memory center

Answer 22

Hippocampus

Question 23

Structure: Fear regulation

Answer 23

Amygdala

Question 24

System: Fight of flight

Answer 24

SNS

Question 25

System: Cell bodies of preganglionic nerusons located in the lateral horn from T1-L2

Answer 25

SNS

Question 26

System: Maintains optimal blood supply to organs

Answer 26

SNS

Question 27

System: Regulates body temperature, metabolic rate, and regulates activity of viscera

Answer 27

SNS

Question 28

System: Rest and digest

Answer 28

PNS

Question 29

System: Cell bodies of preganglionic nureons located in cranial nuclei III, VII, IX, X and sacral spinal cord S2-S4

Answer 29

PNS

Question 30

System: Energy conservation and storage

Answer 30

PNS

Question 31

System: Decreases cardiac activity, facilitates digestion, and regulates activity of the viscera

Answer 31

PNS

Question 32

System: Thoracolumbar outflow

Answer 32

SNS

Question 33

System: Craniosacral outflow

Answer 33

PNS