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Term 1_Physiology > Topic 5 Lymbic system > Flashcards

Topic 5 Lymbic system Flashcards

1
Q

What system is involved in emotion, smelling and memory

A

Lymbic system

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2
Q

The lymbic system includes parts of…

A

The hypothalamus , hippocampus, amygdala, and other nearby structures.

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3
Q

This functions in memory (encoding, consolidation, and retrieval)
Very important in converting short term memory into long term memory

A

Hypocampus

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4
Q

Fear centre of the brain; important in emotional function (esp. Fear)

A

Amygdala

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5
Q

These have 3 protective layers of CT that encircle the brain and spinal cord

A

Meninges

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6
Q

The meninges 3 protective layers include…

A

Dura mater - tough outer layer
Arachnoid membrane - middle layer (cob web system)
Pia mater - inner layer
* they cover the brain/SC up to the point where the nerves exit the spinal cord

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7
Q

Spaces between?

The adipose and CT filled space between the wall of the vertebral canal and the dura matter (

A

Epidural space

no epidural space in the brain ONLY spinal cord

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8
Q

Spaces between?

Interstitial fluid-filled space between the dura mater and the arachnoid membrane

A

Subdural space

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9
Q

Cerebral spinal fluid (CSF) filled space between arachnoid membrane and the pia mater

A

Subarachnoid space

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10
Q

Peripheral nervous system (PNS) include all the nervous tissue outside the CNS - name them

A

Cranial nerves
Spinal nerves
Ganglia
Sensory receptors

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11
Q

They are the path of communication between the brain and the periphery
With 12 pairs of nerves that exit from the base of the brain

A

Cranial nerves

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12
Q

They are the path of communication between the Spinal cord and the periphery (31 pairs of nerves)

A

Spinal nerves

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13
Q

Def. spinal nerves

Two bundles of axons that connect the spinal nerve to the Spinal cord

A

Nerve root

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14
Q

Def. spinal nerves

bundle of motor axons

A

Anterior Root

Aka ventral root

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15
Q

Def. spinal nerves

Bundle of sensory axons

A

Posterior root

Aka dorsal root

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16
Q

Def. spinal nerves

A swelling in the posterior root containing cell bodies of sensory (aka unipolar, primary afferent) neurons of the PNS

A

Posterior/ dorsal root ganglion

17
Q

CT tissue of a spinal nerve…

Innermost, covers the axons (whether it’s myelinated or not - NOT vascularized)

A

Endoneurium

18
Q

CT tissue of a spinal nerve…

Middle layer, covers fascicles (bundle of axons)

A

Perineurium

19
Q

CT tissue of a spinal nerve…

Outermost layer, covers spinal nerve

A

Epineurium

20
Q

Are the perineurium and epineurium highly vascularized? Yes/no

A

Yes

21
Q

Name the 3 divisions of the Peripheral Nervous System (PNS)

A 
Somatic NS (SNS)
Autonomic NS (ANS) - SyNS + PaNS
Enteric NS (ENS)
22
Q

Also known as ‘the voluntary nervous system’
Sensory neurons (aka 1st order neurons) convey information to the CNS (eg. Temperature, pressure pain…)
Motor neurone conduct impulses (signals) from the CNS to the skeletal muscles ONLY

A

Somatic Nervous System (SNS)

23
Q

This system monitors (sensory) and controls (motor) body activities (cardiac, smooth muscle, glands) automatically
Include 2 divisions Sympathetic Nervous System (SyNS) and Parasympatheric Nervous System (PaNS)

** SyNS PaNS are terms used @ Sutherland Chan

A

Automatic Nervous System (ANS)

24
Q

The following describes which system…
Fight or flight
Highly sympathetic activity comes from being excited, scared, threatened

Some responses include: pupil dialation, increased heart rate, blood pressure
Airway dilation
Vasodilation of skeletal and cardiac mm
Glucose release
Vasoconstriction in kidneys and the digestive tract

A

Sympathetic Nervous System (SyNS)

25
Q

The following describes which nervous system…
Rest and digest system (recovery state)
Conserve and restore energy systems
Increased digestive and urinary functions

A

Parasympathetic Nervous System (PaNS)

26
Q

Term…

The major control and integration centre of the ANS is the hypothalamus

A

Autonomic Control

27
Q

Term…
The balance between sympathetic and parasympathetic activity
Regulated by the hypothalamus
Most organs have dual innervation (PaNS & SyNS)

A

Autonomic Tone

More on page 101

28
Q

in this system sensory neurons that monitor chemical changes within the gastrointestinal (GI) tract and the stretching of its walls
Motor neurons control contraction of the GI tract smooth muscle and secretions of the GI organs (eg. acid secretions by the stomach)

A

Enteric Nervous System (ENS)

Term 1_Physiology (27 decks)

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