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Revision of LO5 Homeostasis

Total questions: 61

Worksheet time: 37mins

Name
Class
Date
1.
Homeostasis is defined as what?
a)
Maintain stable internal environment
b)
Staying in the same place
c)
Following the same state
d)
Changing the condition or state
2.

Which of the following hormones is / are produced by the pancreas? (chose more than 1 answer)

a)

Insulin

b)

Oxytocin

c)

glucagon

d)

Cortisol

3.
If a hormone in the body is controlled by positive feedback, the______.
a)
high levels of the hormone will strengthen the action
b)
levels of the hormone will not be affected by the action
c)
high levels of the hormone will oppose the action
d)
low levels of the hormone will oppose the action
4.
Oxytocin is released when ______.
a)
blood glucose increases
b)
labor starts
c)
carbon dioxide in the blood decrease
d)
carbon dioxide in blood increases
5.
What is negative feedback?
a)
Goes away from set point
b)
Returns to set point
c)
Giving bad news
d)
Conduction of information
6.
What is the set point for body temperature?
a)
39
b)
37
c)
35
d)
0
7.
What part of the brain regulates body temperature?
a)
Amygdala
b)
Hippocampus
c)
Pituitary Gland
d)
Hypothalamus
8.
What is the effect of sweating?
a)

Warms the skin

b)

Moisturises

c)

sweat evaporates, it cools the skin

d)

Provides sun protection

9.
What is the hormone that reduces blood glucose levels?
a)
Glucagon
b)
Glucose
c)
Liver
d)
Insulin
10.
What is glucose stored as in the liver?
a)
Glucose
b)
Sucrose
c)
Glucagon
d)
Glycogen
11.
What hormone increases blood glucose level?
a)
Glucagon
b)
Insulin
c)
Glycogen
d)
Glucose
12.
What is the set point of blood glucose?
a)
150mg/100cm3
b)
9mg/100cm3
c)
90mg/100cm3
d)
900mg/100cm3
13.
If blood sugar levels rise as a result of a meal, what will occur as a homeostatic response?
a)
The blood sugar level will continue to rise until illness results.
b)
The blood sugar level will eventually return to its original value.
14.

Homeostasis in the human body is often maintained by the: 

a)

brain only

b)

positive feedback loop

c)

muscles

d)

negative feedback loop

15.

When your glucose level is too high, what is the appropriate response?

a)

Urinate

b)

Release glucagon

c)

Eat sugar

d)

Release insulin

16.

Which component of the homeostatic system detects change?

a)

Effector

b)

Control Center

c)

Stimulus

d)

Receptor

17.

A nurse is reviewing lab reports. The nurse recalls blood plasma is located in which of the following fluid compartments?

a)

Intracellular fluid (ICF)

b)

Extracellular fluid (ECF)

c)

Interstitial fluid

d)

Intravascular fluid

18.

What is Not the other name of tissue fluid?

a)

interstitial and intracellular fluids

b)

interstitial and extracellular fluids

c)

intracellular and extracellular fluids

d)

interstitial and intercellular fluids

19.
If the environment gets cold, we will often shiver in order to:
a)
keep body temperature the same as the external temperature
b)
decrease body temperature
c)
increase body temperature
d)
regulate blood pressure
20.
The term for maintaining internal temperature is: 
a)
Thermoregulation
b)
Thermometer
c)
Homeothermal
d)
Homeostasis
21.
What is the evaporation of a liquid to cool the body?
a)
Shivering
b)
Sweating
c)
Vasodilation
d)
Vasoconstriction
22.

Homeostasis mechanisms...

a)

keep everything exactly the same.

b)

usually operate by positive feedback systems.

c)

act to keep the internal environmental conditions outside the normal range

d)

is the ability to maintain a relatively stable internal environment

23.

This feedback system amplifies a change until a desired outcome is reached.

a)

positive feedback system

b)

negative feedback system

c)

neutral feedback system

d)

self-monitoring feedback system

24.

This is the term used to describe the normal range of a variable in an organism

a)

control center

b)

effector

c)

stimulus

d)

set point

25.

This is the term used to describe a body part that provides the response needed to influence a change.

a)

control center

b)

effector

c)

sensor

d)

set point

26.

It transmits signals to the control center when it detects a change.

a)

control center

b)

effector

c)

response

d)

sensor

27.

receives and analyzes information received from the sensors

a)

control center

b)

effector

c)

sensor

d)

response

28.

A noticeable change in an organism's environment.

a)

control center

b)

response

c)

stimulus

d)

set point

29.

The feedback system that returns the body back to the normal set point.

a)

positive

b)

negative

c)

neutral

d)

returnable

30.

What type of feedback system is described above?

a)

positive

b)

negative

c)

neutral

d)

leofied

31.

What type of feedback system does the model represent?

a)

positive

b)

negative

c)

neutral

d)

glyogen

32.

What is the control center in the model above?

a)

Hypothalamus

b)

muscles

c)

thermoreceptors

d)

Blood vessels

33.

Why does pulse rate increase during exercise?

a)

Oxygen and carbon dioxide must be removed from the body ASAP

b)

Gas exchange must happen more quickly than when a person is at rest

c)

Oxygen must be moved to the lungs and carbon dioxide must be moved to cells more quickly

d)

Carbon dioxide must be moved to the kidneys to be excreted

34.

which organ will balance the glucose level in the blood by releasing hormones like insulin or glucagon?

a)

Stomach

b)

Small intensine

c)

large intestine

d)

Pancreas

35.

Excess of glucose will be stored in what form?

a)

insulin

b)

glycogen

c)

glucagon

d)

glucose

36.

Which hormone is released when blood sugar gets too low?

a)

glucose

b)

glucagon

c)

glycogen

d)

insulin

37.

Glucagon causes muscles and the liver to release _____ back into the bloodstream

a)

glucose

b)

glucagon

c)

glycogen

d)

insulin

38.

____________________ helps warm the human body when we are cold.

a)

sweating

b)

shivering

c)

inhaling oxygen

d)

exhaling carbon dioxide

39.
a body system that controls growth and homeostasis by secreting hormones from glands.
a)
skeletal system
b)
nervous system
c)
endocrine sytem
d)
integumentary system
40.

Which of the following body systems are the most involved in maintaining homeostasis?

a)

Nervous system and respiration system

b)

Nervous system and digestive system

c)

Endocrine system and digestive system

d)

Nervous system and endocrine system

41.

What is the significant for dilation of blood vessels in skin?

a)

To increase body metabolism

b)

Causes more blood flow to the skin so that the heat can be eliminated

c)

Causes less blood flow to the skin so that the heat can be conserved

d)

To reduce sweating rate

42.

What part of the negative feedback loop is what happens inside of the organism, as the result of the effector?

a)

Initiation event

b)

Response

c)

Receptor

d)

change

43.

The fluid, originating from the blood capillary, that is formed in the spaces between the cells is known as:

a)

interstitial fluid

b)

blood

c)

lymph

d)

plasma

44.
The two types of feedback systems that help organisms maintain homeostasis are:
a)
positive and negative 
b)
receptor and effector
c)
static and dynamic
d)
minor and major
45.
Maintaining body temperature is an example of a:
a)
negative feedback loop
b)
positive feedback loop
46.
The process of childbirth is an example of:
a)
negative feedback loop
b)
positive feedback loop
47.

What type of feedback loop is shown?

a)

negative

b)

neutral

c)

positive

48.

When a blood vessel is injured, the injured tissue releases chemicals that activate platelets to form a clot. Clotted platelets then release chemicals to attract more platelets.

a)

Positive feedback

b)

Negative feedback

c)

No feedback

49.
a body system that controls growth and homeostasis by secreting hormones from glands.
a)
skeletal system
b)
nervous system
c)
endocrine sytem
d)
integumentary system
50.

What is the order of the homeostasis Feedback loop?

a)

stimulus->receptor->control center->effector->response

b)

stimulus->response->control center->effector->receptor

c)

receptor->stimulus->control center->effector->response

d)

stimulus->effector->control center->receptor->response

51.

Loops that cause a response to build up and build up until something big happens are called ____________ loops

a)

positive

b)

negative

52.

Blood clotting is an example of a ____________ feedback loop

a)

positive

b)

negative

53.

The heater kicks on and the house warms up, so it kicks off. Then the house cools a bit and the heater kicks back on. This continues all day. It's a _____________ loop.

a)

positive

b)

negative

54.

Blood sugar regulation is an example of a ______________ feedback.

a)

positive

b)

negative

55.

Body temperature regulation is an example of a ______________ feedback.

a)

positive

b)

negative

56.

In a negative feedback loop, each action creates a consequence that ____________________.

a)

produce opposite effect.

b)

has no effect on

c)

amplifies /enhances the change.

57.
a body system that controls and coordinates all body activities through electric impulses/messages between brain, spinal cord and nerves.
a)
endocrine system 
b)
nervous system
c)
nerve
d)
neuron
58.

Plasma is one example of

a)

extracellular fluid

b)

intracellular fluid

c)

tissue fluid

d)

metabolic water

59.

Specific internal variable that regulates sugar levels

a)

Thermo-regulation

b)

Osmo-regulation

c)

Gluco-regulation

d)

Respi-regulation

60.

what is osmoregulation?

a)

Control of water and salt in the body

b)

Control of blood pressure in the body

c)

Control of blood glucose in the body

61.

Osmoregulation happens when organisms regulate

a)

temperature

b)

blood glucose

c)

oxygen

d)

water and solutes

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