Endocrine system

Question 1

Define homeostasis

Answer 1

Homeostasis is the maintenance of a relatively stable internal body environment, despite changes in the external environment

Question 2

What is the negative feedback loop

Answer 2

Stimulus - change in external or internal environment
Receptors - name receptor and detect stimulus and send a signal to the control center
The control center - Hypothalamus/brain decodes the signal and sends a message to the effector muscles, organs or glands
The effector- name muscles, organs or glands
Response - name what the effectors do

Question 3

pancreas

Answer 3

regulates the level of sugar/glucose in the blood stream

Question 4

adrenal gland

Answer 4

helps trigger flight or flight response by releasing adrenaline into the blood stream

Question 5

physiological effects of adrenaline

Answer 5

increased heart rate, increased sweating, dilated pupils increased breathing rate, deeper breaths, glucose released from liver and muscles and blood diverted from skin and intestines to muscles

Question 6

Insulin

Answer 6

lowers blood glucose levels by turning glucose into glycogen to be stored

Question 7

target cells of insulin and glucagon

Answer 7

liver and muscles

Question 8

glucagon

Answer 8

increases blood glucose levels by turning glycogen into glucose

Question 9

where are glucagon and insulin made

Answer 9

pancreas

Question 10

How do hormones reach their target cells

Answer 10

Hormones travel in the blood stream and have a specific shape so they will only bind to the complementary shape of their target cell