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Physiological Psyc Units 1-6 > Periperal Nervous System > Flashcards

Periperal Nervous System Flashcards

1
Q

Physical protection

A

•Physical protection:
Skull
Meninges
Cerebrospinal Fluid (CSF)

•Chemical Protection:
Blood-brain barrier: tightly packed cells of blood vessel walls prevent entry of many molecules

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2
Q

Area Postrema

A
  • produces vomiting of toxins are ingested

* not protected by the blood-brain barrier

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3
Q

Anti-Methamphetamine

A
  • constructs an antigen of methamphetamine attached to a large carrier protein
  • Antibodies in blood sequester the drug after ingestion and slow the rate of entry to brain
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4
Q

Blood Supply of the Brain

A

Anterior and posterior communicating artery: most common areas for aneurysms in the brain

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5
Q

CNS encased in bone and covered by 3 Meninges:

A

Dura mater- tough outer membrane
Arachnoid membrane- web-like
Pia mater- adheres to CNS surface

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6
Q

Spinal cord 4 vertebraes

A

Cervical
Thoracic
Lumber
Sacral

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7
Q

Spinal Cord

A
  • Complex cable of nerves that connects brain to rest of the body
  • Carries sensory info from extremities and internal organs to the brain
  • Carries motor impulses from the brain to internal organs and muscles
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8
Q

Spinal Cord Sensory

A
  • Enters spinal cord through the dorsal root ganglion of each spinal nerve
  • Ganglion is a cluster of these neurons cell bodies
  • located dorsal
  • Afferent (carry info from sense organs)
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9
Q

Spinal Cord Motor

A
  • Axons of motor neurons go out of spinal cord through central root
  • Located central
  • Efferent (carry info away from CNS to the effector muscles)
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10
Q

DAVE

A

Dorsal-Afferent Ventral-Efferent

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11
Q

Optic Sensory

A

Eyes

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12
Q

Offactory Sensory

A

Nose

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13
Q

Autonomic Nervous System

A

•Subdivision of the peripheral Nervous System that controls involuntary motor responses
•Self-regulated actions of organs and glands
•Sympathetic (energizing)
Parasympathetic (calming)

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14
Q

Peripheral Nervous System

A

•Spinal and cranial Nerves
•Connects the body’s Sensory receptors to the CNS and the CNS to muscles and glands
•Contains sets of nerve fibers:
-Somatic and Autonomic Nervous System

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15
Q

Somatic Nervous System

A
  • A subdivision of the peripheral Nervous System that connects CNS to the skeletal muscles and skin
  • Sensory receptors- afferent- dorsal
  • Motor nerves- efferent- ventral
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16
Q

Sympathetic Nervous System

A
  • Governs responses to emergency situations

* Fight or flight

17
Q

Parasympathetic Nervous System

A
  • Monitors the routine operation of the body’s internal functions
  • Rest and digest

Physiological Psyc Units 1-6 (7 decks)

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