Powerpoints Chapter 3 Flashcards Preview

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Flashcards in Powerpoints Chapter 3 Deck (13)
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Q

Autonomic nervous system

A

Controls the heart, intestines, and other organs

1
Q

Somatic nervous system

A

Consists of axons conveying messages from the sense organs to the CNS and from the CNS to the muscles

2
Q

Dorsal=

Sagital=

Ventral=

Contralateral=

A

Back

Front to back

Front

When one side controls the opposite side

3
Q

Part of the CNS found within the s….. Column

  • communicates with the…..
  • dorsal roots carry?
  • ventral roots carry?
  • dorsal root ganglia?
A

Part of the CNS found within the spinal column

  • communicates with the sense organs and muscles, except those of the head
  • entering dorsal roots= carry sensory information
  • exciting ventral roots= carry motor information
  • dorsal root ganglia= cell bodies of the sensory neurons that are located outside the spinal cord
4
Q

The spinal cord consists of two types of matter:

1) grey matter
2) white matter

Each segment sends s…… Information to the brain and receives motor commands

A

1) grey matter=
- is densely packed with cell bodies and dendrites
- located in the center of the spinal cord

2) white matter=
- composed of mostly myelinated axons
- carries information from the gray matter to the brain
- or to other areas of the spinal cord

Each segment sends sensory information to the brain and receives motor commands

5
Q

Two subsystems of the autonomic nervous system?

A

Sympathetic
-composed of ganglia on the left/right of the spinal cord

Parasympathetic

  • dominant during relaxed states
  • composed of long preganglion axons extending from the spinal cord
  • and short postganglionic fibers that attach to the organs themselves
6
Q

Neurotransmitters in the ANS

-postganglionic axons
Mostly release a…………

-sympathetic nervous system mostly uses..?
N………….

A

-postganglionic axons=
Axons of the parasympathetic nervous system mostly release acetylcholine as a neurotransmitter

-sympathetic nervous system mostly uses norepinephrine

7
Q

The hindbrain

Consists of the (3)
M, p, c

Located at?

Hindbrain structures, the midbrain, and other central structures of the brain combine and make up the…?

A

Consists of

  • medulla
  • pons
  • cerebellum

Location
-Posterior portion of the brain

Hindbrain structures, the midbrain, and other central structures of the brain combine and make up the…?
-Brain stem

8
Q

The hindbrain- the medulla and the cranial nerves

The medulla is located?

The cranial nerves
-allow the medulla to control sensations from the..?

A

Medulla
-located just above the spinal cord
Like an enlarged extension of the spinal cord

The cranial nerves
-allow the medulla to control sensations from the
Head, muscle movements in the head, and many parasympathetic outputs

9
Q

The hindbrain- Pons

Location?

Definition?

A

Location
-on each side of the medulla
(Ventral and anterior)

Axons from each side of the brain cross to the opposite side of the spinal cord
-left controls the right side, Ect.

10
Q

The hindbrain- the cerebellum

Helps regulate..?

Also important for..?

A

Structure in the hindbrain with many deep folds

Helps regulate motor movement, balance and coordination

Important for shifting attention between auditory and visual stimuli
-selective attention

11
Q

The midbrain

Contains…

T…..

Superior c……… And inferior c………

T……..

S……… N….

Dopamine allows us to have..?

A

Tectum
-roof of the midbrain

Superior colliculus and inferior colliculus
-processes sensory information

Tegmentum
-contains nuclei for cranial nerves and part of the reticular formation

Substantia nigra
-gives rise to the dopamine-containing pathway facilitating readiness for movement

Dopamine allows us to have motor control

12
Q

The forebrain

The most a……. And p…….. Part of the mammalian brain, with two c……. H……….

-consists of the o…. C….. And s………. R……

-outer portion is known as the c……. C…..
Outer portion=primary lobes

-each side receives s…… I………. And controls the opposite (c…………) side of the body

A

The most anterior And prominent Part of the mammalian brain, with two cerebral Hemispheres

-consists of the outer Cortex And subcortical Regions

-outer portion is known as the cerebral Cortex
Outer portion=primary lobes

-each side receives sensory information And controls the opposite (contralateral) side of the body