Module 4.1 Flashcards Preview

Physiological Psychology > Module 4.1 > Flashcards

Flashcards in Module 4.1 Deck (29)
1

What is the Bell-Magendie law?

entering dorsal roots (axon bundles) carry sensory info and exiting ventral roots carry motor information

2

What makes up gray matter?

cell bodies and dendrites

3

What makes up white matter?

myelinated axons

4

What are the two parts of the autonomic nervous system?

sympathetic nervous system and parasympathetic nervous system

5

Give location and function of sympathetic nervous system.

prepares organs for vigorous activity located to the left and right of the spinal cord

6

Give location and function of parasympathetic nervous system.

facilitates vegetative, nonemergency responses in the brain stem and lower part of spinal cord

7

Which transmitter do the postganglionic parasympathetic nerves use?

acetylcholine

8

Which transmitter do the postganglionic sympathetic nerves use?

norephinephrine

9

What are the main components of the hindbrain?

medulla, cerebellum, and pons

10

What are the cranial nerves?

Nerves that control sensory and motor information of the head

11

What are the anatomical locations and functions of the reticular formation and the raphe system

They are located in the medulla and pons. The reticular formation controls motor areas of the spinal cord. The raphe system sends axons to much of the forebrain, modifying the brains readiness to respond to stimuli.

12

What are the major structures of the limbic system? What are the general functions of the system?

The general function is the control of emotions and motivations. The major structures are olfactory bulb, hypothalamus, hippocampus, amygdala, and cingulate gyrus of the cerebral cortex.

13

Describe the relationship of the thalamus to the cerebral cortex.

Sensory info goes into the thalamus which processes it and sends it to the cerebral cortex

14

What behaviors does the hypothalamus regulate?

motivated behaviors

15

Where is the pituitary? What is its function? What structure largely controls it?

It is attached to the base of and controlled by the hypothalamus. It synthesizes and releases hormones into the bloodstream.

16

What structures make up the basal ganglia?

caudate
putamen
globus pallidus

17

Where is the hippocampus? To what psychological process has it been linked?

It is between the thalamus and the cerebral cortex. It is linked to memory.

18

What are the ventricles? Where is CSF formed? Where does it flow?

They are fluid-filled cavities in the brain. It is formed inside the ventricles by choroid plexus. It flows into the central canal of the spinal cord.

19

What are the functions of CSF?

Provides buoyancy and cushions the brain against mechanical shock

20

What are the functions of the medulla?

breathing, HR, vomiting, salivation, coughing, sneezing; also, cranial nerves (sensory and motor actions of head/organs)

21

What are the functions of the pons?

contains cranial nerves, reticular & raphe systems (regulate arousal/sleep); cross over of motor neurons

22

What are the functions of the cerebellum?

movement, attention, timing

23

What are the major divisions of the midbrain and the structures in each division?

Tectum: superior and inferior colliculi
Tegmentum: nuclei of the third and fourth cranial nerves, part of the reticular formation, and pathways connecting higher and lower structures
Substantia nigra: dopamine-containing pathway

24

What are the main components of the hindbrain?

medulla, pons, cerebellum

25

What is the reticular formation and raphe system associated with?

sleep and arousal

26

What are the major structure of the midbrain?

tectum, tegmentum, substantia nigra

27

What is the medulla's specialty?

controls vital reflexes

28

What is the pon's specialty?

location where axons cross from one side of the brain to the other

29

What is the cerebellum's specialty?

control of movement and balance and coordination