SCSHS Yr9 - Homeostasis, including Nervous & Endocrine Human Body Systems

Question 1

True or False. Too concentrated or dilute blood glucose levels can cause cell damage or lysis.

Accepted Answer

True

Question 2

How does shivering help to maintain body temperature?

Accepted Answer

generates heat by muscle contractions

Question 3

Why do people turn red when they are hot?

Accepted Answer

vasodilation (blood vessels in skin get wider)

Question 4

Why is it important to maintain a body temperature of 37°C?

Accepted Answer

enzymes for chemical reactions work best at this temp

Question 5

Cold outside, body maintains 37 °C; term describes maintenance of stable internal temperature?

Accepted Answer

homeostasis

Question 6

What is it called when the body removes liquid waste through the skin?

Accepted Answer

sweating

Question 7

Which 2 body systems were most actively involved in this experiment?

Accepted Answer

respiratory and circulation

Question 8

How does sweat cool our body?

Accepted Answer

as sweat evaporates, it removes heat from the skin

Question 9

True or False. Body temperature is monitored and controlled by temp receptors in skin & brain.

Accepted Answer

True

Question 10

True or False. Water balance is controlled by the hypothalamus and kidneys.

Accepted Answer

True

Question 11

Which statement is an example of an observation the students could have made?

Accepted Answer

The pulse rate of student F increased by 30 beats per min.

Question 12

What 2 things does our body do to keep warm?

Accepted Answer

shiver & blood vessels contrist (get smaller)

Question 13

Which system has faster acting responses - nervous or endocrine?

Accepted Answer

Nervous

Question 14

During exercise the heart rate increases to provide the muscles with more ______

Accepted Answer

oxygen

Question 15

The graph represents

Accepted Answer

homeostasis maintaining balance

Question 16

Hormones help to control water balance. What would produce the hormones?

Accepted Answer

gland

Question 17

If our body is to function properly, it must regulate...

Accepted Answer

all of the above

Question 18

Which of the following does NOT occur when the salt concentration of the blood is too high?

Accepted Answer

the kidneys release more water into the bladder

Question 19

A disease which stops people from being able to control their blood sugar (glucose) levels

Accepted Answer

diabetes

Question 20

These are feedback loops that bring the body back towards normal.

Accepted Answer

negative

Question 21

Regulation of internal body temperature is controlled by...

Accepted Answer

nerves

Question 22

Why do people go pale when they are cold?

Accepted Answer

vasoconstriction (blood vessels in skin get narrower)

Question 23

Which statement correctly explains these changes?

Accepted Answer

high glucose levels cause more insulin to be released

Question 24

Which mechanism is not controlled by homeostasis?

Accepted Answer

hair colour

Question 25

How is water NOT lost from the body?

Accepted Answer

absorption

Question 26

Bodily chemicals that send messages from one cell to another, affecting changes....

Accepted Answer

hormones

Question 27

Which system has longer lasting impacts?

Accepted Answer

endocrine

Question 28

See alligator, endocrine system cause heart rate increase. How endocrine system send message?

Accepted Answer

sends hormones through bloodstream to heart

Question 29

The 2 systems that are most important to the maintenance of homeostasis are?

Accepted Answer

endocrine & nervous

Question 30

Which system does NOT help regulate body temperature?

Accepted Answer

urinary

Question 31

What is osmoregulation?

Accepted Answer

controlling water content

Question 32

True or False. Dehydration (loss of too much water from the body) damages cells.

Accepted Answer

True

Question 33

What will happen to our body if we starve ourselves for over 8 hours?

Accepted Answer

increased level of glucagon

Question 34

What does glucagon do?

Accepted Answer

makes the liver breakdown glycogen, converting it to glucose

SCSHS Yr9 - Homeostasis, including Nervous & Endocrine Human Body Systems

Questions 34

SCSHS Yr9 - Homeostasis, including Nervous & Endocrine Human Body Systems

Questions 34