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Anatomy Chp 8 and 9 > Chp 9 > Flashcards

Chp 9 Flashcards

1
Q

Cerebrospinal fluid (CSF)

A

fluid that circulates in and around the brain and spinal cord

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2
Q

Choroid plexus

A

vascular network in the brains ventricles that forms cerebrospinal fluid

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3
Q

Corpus callosum

A

thick bundle of myelinated nerve cell fibers deep within the brain that carries nerve impulses from one cerebral hemisphere to the other

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4
Q

Dienchephalon

A

Region the brain between the cerebral hemispheres and the midbrain;contains the thalamus, hypothalamus and the pituitary gland

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5
Q

Gyrus

A

Raised area of the cerebral cortex

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6
Q

Hippocampus

A

Sea horse shaped region of the limbic system that functions in learning and formation of long term memory

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7
Q

Limbic System

A

Area between the brains cerebrum and diencephalon that is involved in emotional states, memory, and behavior

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8
Q

Meninges

A

three layers of fibrous membranes that cover the brain and spinal cord

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9
Q

Reticular formation

A

network in the limbic system that governs wakefulness and sleep

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10
Q

Sulcus

A

shallow groove as between convolutions of the cerebral brain cortex

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11
Q

Ventricle

A

Cavity or chamber. One of the heart’s 2 lower chambers. One of the brains chambers where CSF is produced

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12
Q

Four main divisions of the brain

A
  • Cerebrum
  • The diencephalon
  • The brain stem
  • The cerebellum
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13
Q

The Cerebrum

A

Location: Largest and most superior portion of the brain. Divided into two hemispheres, each subdivided into lobes
Function: Cortex (outerlayer) is site for conscious thought, memory, reasoning, perception, and abstract mental functions, all localized within specific lobes

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14
Q

The Diencephalon

A

Location: Between the cerebrum and the brain stem. Contains the thalamus and hypothalamus
Function: Thalamus sorts and redirects sensory input. Hypothalamus maintains homeostasis, controls autonomic nervous system and pituitary gland

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15
Q

The Brain Stem

A

Location: Anterior region to the cerebrum
Function: Connects cerebrum and diencephalon with spinal cord

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16
Q

Midbrain ( part of the brain stem)

A

Location: Below the center of the cerebrum
Function: Has reflex centers concerned with vision and hearing. Connects cerebrum with lower portions of the brain

17
Q

Pons (part of the brain stem)

A

Location: Anterior to the cerebellum
Function: Connects cerebellum with other portions of the brain. Helps regulate respiration

18
Q

Medulla Oblongata

A

Location: Between the pons and the spinal cord
Function: Links the brain with the spinal cord. Has centers for control of vital functions, such as respiration and the heartbeat

19
Q

Cerebellum

A

Location: Below the posterior portion of the cerebellum. Divided into 2 hemispheres.
Function: Coordinates voluntary muscles. Maintains balance and muscle tone

20
Q

The three meninges

A
  • Pia mater
  • Arachnoid
  • Dura mater
21
Q

Pia mater

A

Location: The innermost layer of the brain, is attached to the nervous tissue of the brain and spinal cord and follows all contours of these structures
-The pia is made up of delicate connective tissue. It holds blood vessels that supply that supply nutrients and oxygen to the brain and spinal cord

22
Q

Arachnoid

A
  • Middle layer of the meninges
  • Loosely attached to pia mater by weblike fibers, forming a space( the subarachnoid space) where CSF circulates
  • Blood vessels pass through this space
23
Q

Dura mater

A
  • The outermost
  • thickest and the toughest
  • in 2 layers, the outerlayer fused to cranial bones
  • in some places these 2 layers separate to provide venous channels, called dural sinuses, for the drainage of blood coming out from brain capillaries
24
Q

Functions of CSF

A
  • Support nervous tissue
  • Cushion shocks that would otherwise hurt these delicate structures
  • Carries nutrients to the cells
  • Transports waste products from cells
25
Q

p180

A

Cerebrospinal Fluid ( read)

26
Q

Frontal Lobe

A

Location: Lies anterior to the central sulcus

  • Primary motor area: provides conscious control of skeletal muscles
  • Premotor Cortex: helps plan complex movements
  • Prefrontal cortex: memory, problem solving, and conscious though , motor speech area, Broca
27
Q

Parietal Lobe

A

Locations: Occupies the superior part of each hemisphere and lie posterior to the central sulcus
Impulses from the skin: Touch, pain, temp

28
Q

Temporal Lobe

A

Location: lies inferior to the side lateral sulcus and folds under the hemisphere on each side
-Auditory, speech

29
Q

Occiptal Lobe

A

Location: posterior to the parietal lobe and extends over cerebrum
-visual

30
Q

Two divisions of the Diencephalon

A
  • Thalamus- Sort out impulses and direct them to particular areas of the cerebral
  • Hypothalamus (p185)
31
Q

pg 185

A

The brain stem (read)

32
Q

pg 186

A

The cerebellum (read)

33
Q

Objective 9

A

p190 Table 9-2

34
Q

pg 188

A

Cranial Nerves (read)

35
Q

Decussate

A

cross or intersect to form an X

36
Q

Ganglia

A

The collection of nerve cell bodies located outside the central nervous

Anatomy Chp 8 and 9 (2 decks)

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