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1

what does the pre-central gyrus do

primary motor cortex and contains cells of origin of descending motor pathways and is involved in the initiation of voluntary movements.
-these axons project to lower motor neurons in the brainstem and spinal cord

2

what does the post central gyrus do

primary somatosensory cortex
-involed w/ somatic (bodily) sensation

3

what is broca's area
where is broca's area

-involved w/ the motor aspect of speech formation
-locateed in the dominant hemisphere and the frontal lobe

4

what is wernicke's area

other language area but located in the temporal lobe of the dominant hemisphere

5

what is heschl's gyrus
where is it

primary auditory cortex in te temporal lobe

6

what is the border of the frontal lobe for the medial aspect

central sulcus

7

what is the border of the frontal lobe for the medial aspect

central sulcus

8

the parietal lobe is located between which sulcus/fissue on the medial aspect of the brain?

central sulcus and parieto-occipital fissure

9

what is the border of the frontal lobe for the medial aspect

central sulcus

10

what is the septum pellucidum

a thin partition that separates the 2 lateral ventricles

11

what is the corpus callosum

c shaped white matter connecting the right and left hemispheeres

12

where i the splenium of the corpus callosum located

nearest to the occipital cortex

13

what causes a bend in the CNS

cephalic flexure

14

1. what does dorsal ventral mean in spinal cord/brain stem?
2. waht does it mean for the cerebral hemispheres?

1. post-ant
2. sup-inf

15

where are the cell bodies of origin of the corticospinal tract?

precentral gyrus, in the primary motor cortex

16

the corticospinal tract runs _____ in the midbrain
runs ______ in the pons
runs ________ in the medulla

crus cerebri
base of pons
pyramids

17

what is the superior colliculus
inf colliculus?

important way-station for vision
importnat for hearing

18

what is in the CNS?
PNS?

brain, spinal cord

spinal nerves, cranial nerves, associated ganglia

19

what are the 2 things that the PNS does?

1. provides afferent sensory inputs to the CNS
2. executes the efferent motor commands/plans/programs being issued by the CNS

20

what is the motor division of the somatic NS? sensory?

motor: consists of motor axons that innervate striated skeletal muscle (like biceps) which are under voluntary control
sensory: sensory receptors in the skin, striated skeletal muscle, and joints-"somatosensory"

21

what does the autonomic NS control

involuntary muscle-cardiac and smooth muscle
glands
blood vessels

22

how does the ANS maintain homeostasis and mediate response to stress?

by its 2 divisions:
sympathtic and parasym

23

what function changes pupil size in response to your body's need

automatic motor

24

what is the nervous system broken up into?
what is the PNS broken up into?
what are efferent (motor) broken up into?
what is the ANS broken up into?

PNS and CNS
afferent and efferent
somatic and ANS
parasympathetic and sympathetic

25

what is found in gray matter?
white matter?

groups of cell bodies
bundles of axons

26

what is gray matter called in the CNS? PNS?

CNS: Nuclei/cortex
PNS: ganglia

27

what is white matter called in the CNS/ PNS?

CNS: tract
PNS: nerve

28

what is basal ganglia

gray matter in the subcortical area

29

what is neurological localizatoin

the process of determining what part of the NS has been affected by a disease process

30

what is localized function?

different parts of the brain have different functions