homeostasis

Question 1

what is homeostasis?

Answer 1

the process of maintaining a relatively stable internal environment despite changes in the external environment

Question 2

what is a negative feedback loop?

Answer 2

a change in conditions that causes a response that lowers or reverses that change

Question 3

what is the receptor?

Answer 3

the detector of the stimulus

Question 4

what is the control centre?

Answer 4

the brain

Question 5

what is the effector?

Answer 5

the part of the body that causes a response

Question 6

what is the response

Answer 6

a signal to reduce original stimulus

Question 7

what is a stimulus

Answer 7

a change in the internal or external environment

Question 8

what is released when glucose peaks?

Answer 8

insulin

Question 9

what is released when glucose drops?

Answer 9

glucagon

Question 10

what cells secrete insulin?

Answer 10

beta cells in pancreas

Question 11

what cells secrete glucagon?

Answer 11

alpha cells in pancreas

Question 12

what does insulin do?

Answer 12

allow glucose to enter cells to provide energy and for liver to store glucose as glycogen

Question 13

what does glucagon do?

Answer 13

tells liver to break down glycogen into glucose and releases into blood stream

Question 14

what is thermoregulation?

Answer 14

the maintenance of body temperature within a range that enables cells to function effectively

Question 15

what happens when body temp drops?

Answer 15

muscles and vessels constrict, goosebumps and shivering

Question 16

what happens when body temp rises?

Answer 16

vessels dilate, sweating

Question 17

what does endothermic mean?

Answer 17

regulates internal environment through homeostasis

Question 18

what does exothermic mean?

Answer 18

internal environment fluctuates with external environments