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BIO 202 endocrine system || with Accurate Answers 100%.
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List and describe the mechanisms for cell communications correct answers 1. Gap Junctions 2. Neurotransmitters 3. Paracrine (local) hormones 4. Hormones Gap Junctions correct answers Pores in cell membrane allow signaling chemicals to move from cell to cell Neurotransmitters correct answer...

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  • March 4, 2025
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  • 2024/2025
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  • list and describe the mechanisms for cell communic

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BIO 202 endocrine system || with Accurate Answers 100%.
List and describe the mechanisms for cell communications correct answers 1. Gap Junctions
2. Neurotransmitters
3. Paracrine (local) hormones
4. Hormones

Gap Junctions correct answers Pores in cell membrane allow signaling chemicals to move from
cell to cell

Neurotransmitters correct answers Released from neurons to travel across gap to 2nd cell

Paracrine (local) hormones correct answers Secreted into tissue fluids to affect nearby cells

Hormones correct answers Chemical messengers that travel in the bloodstreamStimulates
response in another tissue or organ

Relationship between hormones and their target cells correct answers Target cells have receptors
for hormone

List the organs of the endocrine system correct answers 1. Pineal Gland (epithalamus)
2. Hypothalamus
3. Pituitary Gland
4. Thyroid (with 4 parathyroid glands posterior)
5. Thymus
6. Adrenal gland
7. Pancreas
8. Gonads (ovary/testes)

Endocrine glands correct answers No ducts, release hormones into tissue fluids, have dense
capillary networks to distribute hormones
intracellular effects, alter target cell metabolism

exocrine glands correct answers carry secretion to body surface or other organ cavity
extracellular effects (food digestion

Differences between Nervous and Endocrine Systems: Communication and Adaptation correct
answers Nervous: Electrical impulses and neurotransmitters, adapts quickly to continual
stimulation

Endocrine: Hormones in blood, adapts slowly (days to weeks)

Differences between Nervous and Endocrine Systems: Speed and persistence of response correct
answers Speed and persistence to response

Nervous: Reacts quickly (1-10 msec), stops quickly

, Endocrine: Reacts slowly (seconds to days), may continue long after stimulus stops

Differences between Nervous and Endocrine Systems: Area of effect correct answers Area of
effect

Nervous: Local: specific effects on target organs

Endocrine: General: widespread effects on many organs

Similarities between Nervous and Endocrine Systems correct answers 1. Neuroendocrine cells
(neurons that secrete hormones into ECF)

2. Several chemicals function as both neurotransmitters & hormones (norepinephrine)

Similarities between Nervous and Endocrine Systems correct answers 3. Systems have
overlapping effects on same target cells

4. Systems regulate each other
-neurons trigger hormone secretion
-hormones stimule or inhibit neurons

Describe how the hypothalamus communicates with the pituitary gland correct answers -
Connected to the pituitary gland by a complex of blood vessels called the:
hypothalamo-hypophyseal portal

List the hormones produced by the hypothalamus and describe their functions correct answers
oxytocin (OTd
antidiuretic hormone (ADH)

ADH correct answers A hormone released by the posterior lobe of the pituitary gland in response
to low blood pressure; promotes water retention in the kidneys
Produced in the hypothalamus

OT Oxytocin correct answers Labor contractions, milk release; possibly involved in ejaculation,
sperm transport, sexual affection, and mother−infant bonding
Produced in hypothalamus

Tropic Hormones correct answers Hormones that regulate other endocrine glands

Structure of pituitary gland correct answers -Suspended from hypothalamus by stalk
(infundibulum)

-2 Parts:
1. Adenohypophysis (anterior 3/4)
2. Neurohypophysis (posterior 1/4)

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