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HBB > Special Senses And ANS > Flashcards

Special Senses And ANS Flashcards

1
Q

What fibres are the ANS comprised of?

A

GVE fibres. General Visceral Afferent.

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2
Q

What are the two divisions of the ANS?

A

Sympathetic NS

Parasympathetic NS

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3
Q

What are the functions of the ANS?

A
  • Maintenance of Homeostasis.
  • Provides Motor drive to smooth and cardiac muscles.
  • Part of the efferent motor system.
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4
Q

What are the efferent pathway and ganglia for the ANS?

A
  1. Pre-Ganglionic Neuron: Brain or Spinal Cord.
  2. Pre-Ganglionic Axon.
  3. Post-Ganglionic Neuron: Secind Motor Neuron.
  4. Post-Ganglionic Axon.
  5. Effector organ/muscle.
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5
Q

What is the difference between Sympathetic and Parasympathetic?

A

Sympathetic NS is the Fight-or-Flight response.

Parasympathetic is the Rest-and-Digest Response.

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6
Q

Where do the Parasympathetic NS fibres originate?

A

These fibres are CRANIO-SACRAL. They originate in the brain (cranium) and the sacrum of the spinal cord.

Long pre-ganglionic and short post-ganglionic fibres.

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7
Q

Where do the Sympathetic NS fibres originate?

A

These fibres are THORACOLUMBAR. They originate in the thoracic and lumbar region of the vertebral column.

Short Pre-ganglionic and Long Post-ganglionic fibres.

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8
Q

What are the major neurotransmitters in the Sympathetic NS?

A
  1. Pre-ganglionic Neurons release Acetylcholine (ACh).

2. Post- Ganglionic Neurons release Norepinephrine (NE).

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9
Q

What is the major neurotransmitter in the Parasympathetic NS?

A

Pre and Post-Ganglionic Neurons release Acetylcholine (ACh).

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10
Q

What are the targets of ANS Neurons?

A

Smooth Muscle, Glands and Cardiac Muscle.

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11
Q

What is a Cholinergic Receptor?

A

A receptor that uses Acetylcholine as it’s neurotransmitter.

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12
Q

What is an Adrenergic Receptor?

A

Receptors that are activated by Norepinephrine and Epinephrine.

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13
Q

The sympathetic trunk. What is it?

A

Vertical cords if the sympathetic NS that are situated on each side of the spinal cord. They hold sympathetic trunk ganglion that pre-Ganglionic sympathetic nerve fibres synapse onto.

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14
Q

What is the path for pre- and post-Ganglionic neurons?

A

Pre-Ganglionic Neurons enter sympathetic trunk ganglia via the White Rami Communicans. They synapse with post-Ganglionic Neurons in the trunk ganglia and leave it via the Grey Rami Communicans.

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15
Q

What are the five special senses?

A
  1. Sight: SSA
  2. Smell: SVA
  3. Taste: SVA
  4. Hearing: SSA
  5. Balance: SSA
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16
Q

Define the Autonomic Nervous System

A

The ANS is part of the efferent division of the PNS (motor).

HBB (9 decks)

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