Chapter 14 Flashcards Preview

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Flashcards in Chapter 14 Deck (41):
0

What are the three major landmarks of the brain?

Cerebrum
Cerebellum
Brainstem

1

83% of the brain's volume and consists of two half globes called cerebral hemispheres

Cerebrum

2

Name four parts of the cerebrum

Gyri
Sulci
Longitudinal fissure
Corpus callosum

3

What are the thick folds of the cerebrum called?

Gyri

4

What are the shallow grooves of the cerebrum called?

Sulci

5

What is the deep groove that separates the right and left hemispheres of the cerebrum called?

Longitudinal fissure

6

What is the thick bundle of nerves fibers that connect the two hemispheres of the cerebrum called?

Corpus callosum

7

This occupies posterior cranial fossa inferior to the cerebrum

Cerebellum

8

The deep grooves that separates the cerebrum from the cerebellum, it's called?

Transverse cerebral Fissure

9

What is left of the brain?

The brainstem

10

Surface layer over the cerebrum and cerebellum is called?

Cortex

11

The deeper masses of gray matter surrounded by white matter called?

Nuclei

12

Bundles of axons which connect the parts of the brain and connect to the spinal cord or called?

Tracts

13

During what week of embryonic development does the neural plate which gives rise to neurons and glial cells sink and form A neural groove with raised neural folds?

The third week

14

By what week of embryonic development does the neural folds fuse creating a hollow neural Tube which exhibits three dialations?

The fourth week

15

The three dialations will subdivide by what week of embryonic development?

The fifth week

16

What protects the brain and provides a framework for its arteries and veins?

The meninges

17

The spaces between the Dura matter layers that collect blood are called?

Dural sinuses

18

Dura fold that extends into the longitudinal fissure is called?

Falx cerebri

19

Dura fold that separates the cerebellum and cerebrum is called?

Tentorium cerebella

20

Duro fold that separates the right and left halves of the cerebellum?

Falx cerebella

21

What are the internal chambers in the brain called?

Ventricles

22

What is the clear colorless liquid that fills the ventricles etc. and bathes the external surface of the brain called?

Cerebrospinal fluid

23

Cerebrospinal fluid is produced from__________ ____________ filtered through the choroid plexus, then modified by
_________ __________.

Blood plasma
Ependymal cells

24

CSF flows from choroid plexus in the lateral ventricle > through _____________ ____________ >____ ventricle >
_____________ _____________ to fourth ventricle > through apertures >_______________ ______________ > arachnoid granulations > dural _________ _________

Intraventricular foramina
Third
Cerebral aqueduct
Subarachnoid space
Venous sinuses

25

What are the purposes of the cerebrospinal fluid?

Buoyancy, protection and chemical stability

26

Blood supply must be constant because _________ have a high demand for _____, thus a high demand for glucose and ______.

Neurons
ATP
O2

27

Blood is a source of _____________ ____________ and other harmful agents.

Bacterial toxins

28

What does the brain barrier system regulate?

What can enter the tissue fluid of the brain

29

All nerve fibers connecting the brain to the spinal cord pass through the what?

Medulla

30

The medulla contains networks of ___________ and __________ functions and contains center for life-sustaining functions like what?

Sensory and motor
Heart rate, respirations, blood pressure

31

What contains the continuation of reticular formation and several tracts?

The pons

32

The reticular formation portion of the pons contains nuclei involved in what?

Sleep, respiration and posture

33

Function in visual attention, visual tracking and blinking

Superior colliculi

34

Receive signals from the inner ear and relay them, mediate head turning reflex to sound and the jump when startled

Inferior colliculi

35

Stalks that anchor the cerebrum to the brainstem are called?

Cerebral peduncles

36

Fibers that go to and from the cerebellum to collaborate in fine motor control are called?

Red nucleus

37

The motor center that relays inhibitory signals to the thalamus to prevent unwanted body movement are called?

Substantia nigra

38

Involved with controlling the awareness of pain.

Central Grey matter

39

Gray matter that runs through the brainstem is called?

The reticular formation

40

The reticular formation consists of neural networks which function in four things name them.

Somatic Motor control which includes muscle tone, balance, posture,integration of signals from the eyes and ears.