Homeostasis

Question 1

Homeostasis

Answer 1

The physiological state of the body in which internal, physical and chemical conditions are kept in a range suitable for life process

Question 2

In homeostasis do we talk about the intracellular fluid or extracellular fluid? And what is it made of?

Answer 2

Extracellular fluid. It is composed of blood plasma and interstitial fluid

Question 3

Blood plasma

Answer 3

The fluid part of blood

Question 4

Interstitial fluid

Answer 4

The fluid that fills the spaces between cells and tissues

Question 5

Homeostatic mechanism

Answer 5

(may incorporate multiple organ systems) monitors internal and external conditions and changes bodily functions to maintain homeostasis

Question 6

Negative feedback mechanisms

Answer 6

When something in the body is too low and it sends a signal to raise it, then when it gets too high it sends a signal to lower it and so on. Ex. Thermostat

Question 7

Thermoregulation

Answer 7

The regulation of internal temperature using the negative feedback mechanisms

Question 8

Homeotherms

Answer 8

Animals that maintain a stable body temperature regardless of external temperatures. Also known as endotherms (humans, mamals)

Question 9

Poikilotherms

Answer 9

Animals whos body temperature atches with external temperatures. Also known as ectotherms (fish, amphibians)

Question 10

Hypothalamus

Answer 10

Regulates thermorugulation in humans

Question 11

Hypothermia vs Hyperthermia

Answer 11

Hypothermia is cold Hyperthermia is hot

Question 12

Hyperthermia

Answer 12

body temperature is elevated beyond normal because of failed thermoregulation

Question 13

Hormones

Answer 13

chemicals released by specialized cells that affect cells in other parts of the body

Question 14

Endocrine hormones and examples

Answer 14

chemicals secreted by endocrine glands directly into the blood ex. digestive, mucus, and sweat glands

Question 15

Exocrine glands

Answer 15

secrete substances onto body surfaces or cavities via tubes or ducts

Question 16

Non-target hormones

Answer 16

growth hormones, insulin and adrenaline

Question 17

Targeted hormones

Answer 17

gastrin

Question 18

Similarities and differences between the nervous system and the endocrine system

Answer 18

Similarities: provides integration and control of organs and tissues
Differences: nervous system has immediate response to changes where endocrine system maintains control over long periods of time.

Question 19

Do hormones affect all cells?

Answer 19

No, cells may have receptors for some hormones and not others and the number of receptors on each cell vary

Question 20

Steriod hormones

Answer 20

made of cholesterol