Endocrine system

Question 1

how does the endocrine system help maintain homeostasis

Answer 1

Endocrine system makes chemical to help regulate levels in the body

Question 2

2 organ systems incharge of internal control

Answer 2

1) Nervous system
2) Endocrine system

Question 3

Endocrine system

Answer 3

contains glands that produce chemical messages called hormones

slower nerve impulses, regulate longer body processes (growth, reproduction)

Question 4

Hypothalamus

Answer 4

part of the brain that connects the nervous system with the endocrine system

Question 5

Glands

Answer 5

a group of cells that secrete a chemical substance called a hormone

Question 6

Pituitary gland

Answer 6

main gland of the endocrine system

Completely controlled by the hypothalamus

Question 7

what happens when pituitary gland receives messages from hypothalamus

Answer 7

releases its own chemicals or stimulates other glands to release theirs

Question 8

Hormones

Answer 8

Chemical messages that get secreted into the blood

The info in hormones tells the body and cells what to do
Most hormones are released because of negative feedback system

Question 9

hGH

Answer 9

human growth hormone

Question 10

What happens to blood sugar levels when you grow

Answer 10

Blood sugar levels lower as growing cells use glucose

Question 11

What does the hypothalamus do when blood sugar is low

Answer 11

It detects low blood sugar and signals the pituitary gland

Question 12

What does the pituitary gland do in response to low blood sugar

Answer 12

releases hGH into the bloodstream

Question 13

What is the role of hGH in blood sugar regulation

Answer 13

hGH signals liver cells to release more glucose into the blood

Question 14

How do cells continue to grow with the help of hGH

Answer 14

Cells use the extra glucose released by the liver

Question 15

What stops the production of hGH

Answer 15

Increased blood sugar signals the hypothalamus to stop hGH production

Question 16

2 types of hormones

Answer 16

1) Steroid hormones
2) Amino acid based hormone

Question 17

Steroid hormones

Answer 17

Made from lipids (fats)

Easily diffuse across the cell and nuclear membranes to combine with cell receptors in the nucleus

Question 18

Amino acid based hormone

Answer 18

Made from proteins

Do not diffuse across cell membranes

Cannot go directly into the nucleus therefore they alter the behaviour of the other molecules in the cell

Question 19

Adrenal glands

Answer 19

Prepare body for stressful situations

1) Outer portion
2) Inner portion

Question 20

Outer portion of adrenal glands

Answer 20

Adrenal cortex

Secretes steroid hormones which cause increase in sugar available

helps increase blood pressure

Helps to deal with temperature changes, illnesses

Question 21

Inner portion

Answer 21

aka adrenal medulla

Question 22

fight or flight amino acids

Answer 22

secreted by inner portion of adrenal glands

Epinephrine - aka adrenaline
Norepinephrine

Question 23

what do Epinephrine and Norepinephrine do

Answer 23

Responsible for “adrenaline rushes”

Increases heart rate, blood pressure, respiration, increase efficiency of muscles