Endocrine Flashcards

1
Q

Endocrine Glands are

A

Ductless that release hormones via bloodstream

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2
Q

Hormone levels are often controlled by

A

Negative feedback

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3
Q

Hormones are

A

long distance , released by glands

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4
Q

Autocrines are

A

Short Distance, chemical messengers that affect the cells that released them (self)

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5
Q

Paracrines are

A

short distance , affect nearby cells

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6
Q

Humoral stimuli

A

chemicals found in body fluid like ion/nutrient levels

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7
Q

Neural stimuli

A

direct stimulation by neurons (e.g Adrenal Medulla)

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8
Q

Hormonal stimuli

A

by hormones

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9
Q

Target cells respond to

A

Hormones. Response depends on: Hormone levels, # of receptors on cell, receptor desire for the hormone

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10
Q

Half - life

A

how long the hormone remains active in blood

water-soluble hormones have shortest half lives, steroids have longest half lives

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11
Q

Onset time

A

How quickly target cells respond

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12
Q

Duration of effect

A

how long the cells stays in response to that hormone

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13
Q

Permissiveness

A

the hormone only works fully when the other is working

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14
Q

Synergism

A

The hormone works better together

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15
Q

Antagonism

A

The hormone works against each other

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16
Q

Hypothalamus

A

part of the brain with endocrine functions.

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17
Q

Hypothalamus produces and secretes

A

Oxytocin and ADH to the Posterior Pituitary

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18
Q

Hypothalamus is connected to the pituitary by the

A

Infundibulum

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19
Q

Proper name for Posterior Pituitary is the

A

Neurohypophysis (nur - ro - hi - pa- th- sis)

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20
Q

The tract that goes from the Hypothalamus to the Posterior Pituitary is called

A

Hypothalamic - Hypophyseal tract

Hy-po-tha- lamic Hy-po -fa- seal

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21
Q

Neurohypophysis (posterior pituitary)

A

stores and releases hormones only

22
Q

Oxytocin

A

targets the uterus, breast, brain, uterine contractions , and milk ejection

23
Q

Anti-diuretic Hormone (ADH)

A

targets kidneys, blood vessels. Stimulates water re-absorption, blood pressure maintenance (keeps BP up)

24
Q

Anterior Pituitary proper name is

A

Adenohypophysis ( A -DE- No- hy- pa-fa-sis)

25
Adenohypophysis produces and releases 6 hormones
Growth Hormone (GH) , Thyroid-Stimulating Hormone (TSH) , Adrenocorticoropic Hormone (ACTH), Follicle-stimulating hormone (FSH) , Luteinizing Hormone (LH), Prolactin (PRL)
26
Growth Hormone (GH)
Targets almost all cells , Stimulates growth
27
Thyroid - Stimulating Hormone (TSH)
targets thyroid gland, stimulates the thyroid hormone (TH)
28
``` Adrenocorticotropic Hormone (ACTH) A-Dre-no- cor-tic-co-tro-pic) ```
targets adrenal cortex , stimulates release of Gluco - and Gonadocorticoids
29
Follicle - stimulating hormone (FSH)
targets gonads (ovaries and testis) , stimulates eggs and sperm
30
``` Luteninizing Hormone (LH) (Lu-ten-ni-zing) ```
``` targets gonads (ovaries and testis) Stimulates estrogen/progesterone stimulates testosterone production by testes ```
31
Prolactin (PRL)
targets mammary glands, stimulates milk production
32
Thyroid Gland is located
inferior to the larynx
33
The lobes on the Thyroid Gland is connected by an
isthmus
34
Thyroid Hormone (TH) is produced by
follicle cells/ colloid ; targets almost all body cells , increases basal metabolic rate (BMR) , promotes normal development of systems
35
Thyroid Gland Produces two hormones
Thyroid Hormone (TH) and Calcitonin
36
Calcitonin produced by
parafollicular cell, decreases Ca2+ loss from bone (it maintain bone)
37
iodine is needed to make
Thyroid Hormone
38
Goiter is caused by
iodine deficiency
39
Graves' disease caused by an
over active thyroid (Hyperthyroidsim) | Symptoms: weight loss, eyes swell , its treatable
40
Parathyroid Glands usually have
four round glands on dorsal thyroid gland
41
Parathyroid Glands produce one hormone called
Parathyroid hormone (PTH)
42
Parathyroid Hormones (PTH) targets
bone and kidneys, raises blood ca2+ (calcium) levels (removes calcium from bone)
43
Adrenal Glands are located
on top of the kidneys (2)
44
Adrenal Glands have two glands in one which are
the adrenal cortex and adrenal medulla
45
Adrenal Cortex
outer region consisting of 3 layers or zones
46
Zona Glomerulosa is what layer
outer layer of cortex
47
Zona Glomerulosa produces a class of hormones called
Mineralocorticoids like Aldosterone
48
Aldosterone targets the
kidney tubules , increase Na+ (salt/sodium) , decreases urine output, maintains /keeps up blood pressure.
49
Zona Fasciculata is what layer
Middle layer of cortex
50
Zona Fasciculata produces a class of hormones called
Glucocortitcoids like Cortisol
51
Cortisol targets the
liver, cardiovascular, digestive system