Exam 3 Part 3 Flashcards Preview

Biology 150 > Exam 3 Part 3 > Flashcards

Flashcards in Exam 3 Part 3 Deck (22)
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1
Q

Brainstem

A

mesencephalon, pons, medulla oblongata
main connection between cerebrum and spinal cord
many autonomic centers

2
Q

Mesencephalon

A
midbrain.
cerebral aqueuct: connects 3rd and 4th ventricle
cerebral peduncles 
Many paired nuclei
tectum
3
Q

cerebral peduncles

A

in midbrain.

paired motor tracts, support and connect cerebrum to other part of brain

4
Q

tectum

A

in midbrain

cover cerebral aqueduct

5
Q

corpora quadrigemina

A

2 pairs of sensory nuclei
superior (visual reflexes) and inferior (auditory reflexes) colliculi
in midbrain

6
Q

pons

A

bridge, midbrain, medulla oblongata and cerebellum

modifies rate and depth of breathing; sleep secondary resp center

7
Q

medulla oblongata

A

connects to spinal cord at foramen magnum
decussation of the pyramids; crossover of motor tracts
nuclei for vital functions
resembles spinal cord; white matter to outside; gray matter inner areas

8
Q

nuclei in medulla oblongata

A

cardiac center
vasomotor center
respiratory center
reflexes

9
Q

cerebellum

A

2nd largest structure of brain
separated from cerebrum by transverse fissure
2 hemispheres; connects at central constricted areas
3 layers
coordination of skeletal mucles, postre; drug effect
proprio perception

10
Q

layers of cerebellum

A

cerebellar cortex
arbor vitae
cerebellar nuclei

11
Q

cerebellar cortex

A
outer, gray matter of cerebellum
Purkinje cells (interneurons)
12
Q

Arbor vitae

A

white matter
in cerebellum
tree of life

13
Q

cerebellar nuclei

A

in cerebellum

deep, gray matter

14
Q

Hindbrain

A

cerebellu,. pons, medulla oblongata; aqueduct enlarges-> 4th ventricle (has choroid plexus)

15
Q

reticular formation

A

reticullar activating system

RAS -network of neurons (midbrain, pons, medulla oblongata to spinal cord) -> keeps one awake

16
Q

medulla

A

middle

17
Q

arbor

A

tree

18
Q

vitae

A

life

19
Q

pod

A

foot

20
Q

uncles

A

little

21
Q

corpora

A

body

22
Q

gemina

A

twins