D3.3 Homeostasis

Question 1

Homeostasis

Answer 1

Ability to maintain a constant internal environment

Question 2

regulator

Answer 2

An animal that can maintain a constant internal environment, enabling it to continue normal activities, regardless of external conditions

Question 3

negative feedback loops

Answer 3

Conditions are brought back to a set value as soon as it detected deviation

Question 4

examples of negative feedback

Answer 4

Regulation of body temperature
Blood sugar level
Amounts of water and ion and blood and tissue fluid

Question 5

order of negative feedback

Answer 5

Input - receptor - coordinator - effector - output

Question 6

normal level of blood glucose

Answer 6

90 MG of glucose in every 100 cm^3 of blood

Question 7

What is glucose needed for?

Answer 7

Respiration because it is quickly absorbed across the cell membrane
Main respiratory substance
Glycogen gets used up very quickly

Question 8

hypoglycemia

Answer 8

Condition my blood sugar levels are too low below 60 MG

cant faint and coma

Question 9

hyperglycemia

Answer 9

When blood sugar levels are too high
Water goes back into blood because of lower water potential
Body becomes dehydrated

Question 10

what happens if glucose is too high

Answer 10

Withdrawn from blood and stored as glycogen

Question 11

islets of Langerhans

Answer 11

Groups of endocrine cells located in the pancreas
Become hormone secreting glands
Rich capillary network, but no ducts

Question 12

Alpha cell

Answer 12

Glucose cell of the islets of Langhan and pancreas

Question 13

beta cell

Answer 13

Insulin greeting cells of the islets of Langerhans in the pancreas
Stimulated by raised blood glucose levels

Question 14

glycogenesis

Answer 14

Conversion of glucose to glycogen and cells and glucose to fatty acids and fat
Deposition of fatter around the body

Question 15

what happens when blood glucose level falls below normal

Answer 15

A cells of pancreas, secrete glucagon

Question 16

glucagon

Answer 16

Made in pantry that promote background of glycogen to glucose and the muscle cells

Question 17

diabetes

Answer 17

Failure to regulate blood glucose levels

Question 18

type 1 diabetes

Answer 18

The result of failure of insulin production by beta cells

Question 19

type 2 diabetes

Answer 19

Fear of the influence receptor proteins on the cell membrane of target cells

Question 20

what can type two diabetes lead to?

Answer 20

Increase risk of circulatory disorders, renal failure, blindness, strokes, or heart attacks

Question 21

risk factors for type two

Answer 21

Overweight, obese, age 40 or older, family history, high BP low HDL or high triglycerides, inactivity

Question 22

type 1

Answer 22

genes and environmental factors like viruses

Question 23

what can type 2 be controlled by?

Answer 23

diet, reduction in weight

Question 24

what can type 1 be controlled by?

Answer 24

insulin rejections, and insulin pumps

Question 25

physiological controls

Answer 25

Regulation of loss of heat through skin Thermal regulation is called endotherm Can also regulate their body temperature by modifying their behavior

Question 26

vasoconstruction

Answer 26

The narrowing of blood vessels by small muscles in the walls, restricting blood flow

Question 27

vasodilation

Answer 27

The widening of blood vessels by small muscles in the walls increasing blood flow

Question 28

increase in temperature

Answer 28

Vasodilation Hair is life, flat allowing variation of heat from body increased sweat to cool body

Question 29

Decrease in temperature

Answer 29

Vasoconstriction Had to be wrecked to trapped heat Decreased sweat production Skeletal muscles contracting, causing shivering Metabolic activity in liver increases heating body

Question 30

adipose tissue roll in heat

Answer 30

To maintain temperature of newly born babies Memorize his triglycerides for heat

Question 31

uncoupled respiration

Answer 31

Energy stored in ATP to release heat to maintain body temperature