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Neuro > Lecture 5 (2/3) > Flashcards

Lecture 5 (2/3) Flashcards

1
Q

Homeostasis

A

Regulation of the pituitary gland, maintains equilibrium in the body.

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2
Q

Pituitary Gland

A

aka Hypophysis

Small, pea-sized swelling at the base of the hypothalamus

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3
Q

Sellar Turcica

A

The bony cavity in which the pituitary gland

Covered by a dural fold called seller diaphragm

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4
Q

Sellar Diaphragm

A

AKA Diaphragm Sellar

A dural fold that covers the seller turcica

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5
Q

Adenohypophysis

A

Anterior portion of the pituitary gland

Where the hormones are produced

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6
Q

Neurophypophysis

A

Posterior portion of the pituitary gland

Extension of the hypothalamus

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7
Q

Adipsia

A

Caused by a small lesion in the hypothalamus

Lack of desire to drink

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8
Q

Satiety Center

A

Located ventral medially of the hypothalamus

A lesion here leads to Hyperphagia and aggressive behavior

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9
Q

Hyperphagia

A

Eating too much - leads to obesity

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10
Q

Dysphagia

A

Caused by a lesion in the lateral portion of the hypothalamus

Trouble eating

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11
Q

Supraoptic Nucleus

A

In the anterior portion of the hypothalamus

Involved in regulating water balance in the body
Allows us to feel thirsty or feel the need to urinate

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12
Q

Polydipsia

A

Caused by a lesion in the supraoptic nucleus

Increased water intake

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13
Q

Polyuria

A

Caused by a lesion in the supraoptic nucleus

Increased urination

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14
Q

Vasoconstriction

A

When the muscles are signaled to shiver in order to generate heat

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15
Q

Hyperthermia

A

Caused by a lesion to the anterior portion of the hypothalamus

Increased body temperature

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16
Q

Hypothermia

A

Caused by a lesion to the posterior portion of the hypothalamus

Decreased body temperature

17
Q

Epithalamus

A

Lies above the thalamus

Has 3 Substructures:
Pineal Body
Stria Medullares
Habenula

18
Q

Pineal Body/Gland

A

Portion of the epithalamus

Receives visual information about light and darkness
Secretes chemicals into the bloodstream that are associated with sleep/wake cycles

19
Q

Stria Medullares

A

Carries the circadian rhythm

20
Q

Subthalamus

A

A structure found in the caudal portion of the diencephalon

3 Main Structures:
fields of Forel
Zona Incerta
Subthalamic Nucleus

21
Q

Subthalamic Nucleus

A

Connected to a structure called Globus Pallidus

Receives fibers from the motor cortices

Damage to the sub thalamic nucleus results in involuntary movements, especially in the upper limbs.

Neuro (22 decks)

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