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Homeostasis & Nervous System

Total questions: 68

Worksheet time: 1hrs 13mins

Name
Class
Date
1.

Homeostasis refers to

a)

the maintenance of a constant heart beat.

b)

the dynamic processes occurring in the kidney.

c)

the static unchanging environment factors.

d)

the constancy of the internal environment of an organism.

2.
What is mean by homeostasis?
a)
Controls and coordinates body activities through chemical 
b)
controls and coordinates body activities through electrical impulses
c)
For maintenance of a steady state in the internal environment
d)
remove metabolic waste products from the cel
3.
which of the organ will balance the glucose level in the body?
a)
Stomach
b)
Small intensine
c)
Deodenum
d)
Pancrease
4.
What is involuntary contractions of voluntary muscles to warm up?
a)
Shivering
b)
Sweating
c)
Vasodilation
d)
Vasoconstriction
5.

Which is NOT a characteristic/example of positive feedback?

a)

Enhances the stimuli

b)

Body temperature, Blood pressure

c)

Labor contractions

6.
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
7.
When you are cold, you shiver and your blood vessels contract, which warms you up. When you are hot, you sweat and your blood vessels expand, which cools you down.  
a)
Positive Feedback Response
b)
Negative Feedback Loop 
8.
What is another word that can be used to describe "homeostasis"?
a)
STABLE
b)
EQUAL
c)
COMPLETE
d)
CORRECT
9.

What hormone is produced in the pancreas that lowers blood sugar?

a)

Insulin

b)

Glucagon

c)

Ketones

d)

Glucose

10.

Sweating cools the body through a process called

a)

conduction

b)

evaporation

c)

ionisation

d)

dehydration

11.

Blood sugars are controlled by

a)

brain generated chemicals

b)

blood

c)

hormones from the pancreas

d)

chemicals from the liver

12.

The hormone that makes the liver store sugars is

a)

glucose

b)

glycogen

c)

glucagon

d)

insulin

13.

The liver normally stores blood sugar as

a)

glucose

b)

glycogen

c)

glucagon

d)

fats

14.

The action of insulin causes

a)

The liver to secrete enzymes

b)

The liver to make glycogen

c)

The liver to make glucose

d)

none of these

15.

After a period of strenuous exercise you may need to

a)

drink tea

b)

drink water with electrolytes

c)

drink a high energy drink

d)

drink water

16.

What is a receptor?

a)

Receptors are located in the skin

b)

Receptors carry messages to the hypothalamus

c)

A receptor receives messages and causes a response

d)

Receptors or sensors detect changes in the body

17.
What is not a respond by the human body when the temperature of body increases?
a)
Sweat gland secrete more sweat
b)
Produce hormone to increase the metabolic rate
c)
Blood vessels dilate
d)
Hair erector muscles relax
18.
If a person cant control the glucose level in the body can lead to what sick?
a)
Heart attack
b)
High blood pressure
c)
strok
d)
Diabetes
19.

Why our hair will stands erect during cold days?

a)

To increase body metabolism

b)

To trap air which acts as heat insulator

c)

To let more blood flows near skin surface

d)

To cool down skin when sweats is evaporated

20.
What is the evaporation of a liquid to cool the body?
a)
Shivering
b)
Sweating
c)
Vasodilation
d)
Vasoconstriction
21.
When you get cut, your skin cells release hormones that signal platelets to come and stop the bleeding. Platelets then release more hormones that signal even more platelets to help stop bleeding. The hormone signals continue until the cut is closed.
a)
Positive Feedback Response
b)
Negative Feedback Loop 
22.
Positive feedback is when the change caused by the stimulus is
a)
decreased
b)
non existant
c)
increased
d)
changes constantly
23.

Salt water crocodiles bask in the sun for several hours every morning. which one of the following statements best describes the method of thermoregulation in salt water crocodiles?

a)

Endothermy, increase body temperature to increase rate of metabolism reactions in cells

b)

Ectothermy, decrease body temperature to increase rate of metabolic reactions in cells.

c)

Endothermy, decrease body temperature to increase rate of metabolic reactions in cells

d)

Ectothermy, increase body temperature to increase rate of metabolic reactions in cells

24.

A student walks into a cold room.

Which of the following happens to his body?

a)

Sweating and vasodilation of blood vessels.

b)

Shivering and vasoconstriction of blood vessels

c)

Sweating and vasoconstriction of blood vessels.

d)

Shivering and vasodilation of blood vessels.

25.

Diagram shows the cross section of human skin.

Which of the following will occur when the surrounding temperature drops below 10 ° C?

a)

R constrict

b)

Q relax

c)

P erect

d)

S become active

26.

Which body system controls the body to maintain homeostasis?

a)

excretory

b)

nervous

c)

circulatory

d)

skeletal

27.

Homeostasis is a ________ of an internal environment in organisms body to be in ________ and balance condition.

a)

repair , stable

b)

maintenance , stable

c)

repair , higher

d)

maintenance , higher

28.

Which organ acts as a control centre of a homeostasis process?

a)
b)
c)
d)
29.

These are corrective mechanisms when ...

a)

Water level Increases

b)

Water level Decreases

c)

Body temperature increases

d)

Body temperature decreases

30.

Choose Corrective mechanisms when body temperature increases

a)

Hair lies flat

b)

Hair stands erect

c)

Blood vessel dilates

d)

Blood vessel constricts

e)

More sweats is produced

31.

Why our hair will stands erect during cold days?

a)

To increase body metabolism

b)

To trap air which acts as heat insulator

c)

To let more blood flows near skin surface

d)

To cool down skin when sweats is evaporated

32.

the reason for all these corrective mechanisms during homeostasis is to ..

a)

Keep body warm

b)

Cool down body

33.

What is an effector in the model above?

a)

Hypothalamus

b)

sweat glands

c)

thermoreceptors

d)

sweating

34.

What is the sensor in the model above?

a)

Hypothalamus

b)

muscles

c)

thermoreceptors

d)

Blood vessels

35.

What is the stimulus in the model above?

a)

body temperature

b)

increase in body temperature

c)

decrease in body temperature

d)

blood vessels dilating

36.

What type of feedback system does the model represent?

a)

positive

b)

negative

c)

neutral

d)

glyogen

37.

What type of feedback system is described above?

a)

positive

b)

negative

c)

neutral

d)

leofied

38.

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

a)

positive

b)

negative

c)

neutral

d)

returnable

39.

A noticeable change in an organism's environment.

a)

control center

b)

response

c)

stimulus

d)

set point

40.

receives and analyzes information received from the sensors

a)

control center

b)

effector

c)

sensor

d)

response

41.

The reaction of the effector is called..

a)

response

b)

sensor

c)

stimulus

d)

set point

42.

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

a)

control center

b)

effector

c)

response

d)

sensor

43.

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

44.

Which of the following are in the correct order?

a)

organ system, cell, organ, tissue, organism

b)

cell, organ, tissue, organ system, organism

c)

cell, tissue, organelle, organ system, organism

d)

cell, tissue, organ, organ system, organism

45.
What is the central nervous system (CNS) made of?
a)
brain and spinal cord
b)
brain and cranial nerves
c)
spinal cord and spinal nerves
d)
cranial nerves and spinal nerves
46.
What is the purpose of the myelin sheath on the axon?
a)
To maintain temperature
b)
To improve conductivity
c)
To protect the axon
d)
To release neurotransmitters
47.
Sensory neurons carry nerve impulses from the sense organs and internal organs (like your stomach) to the
a)
peripheral nervous system (PNS)
b)
central nervous system (CNS)
c)
muscles
d)
sense organs
48.
a signal molecule that transmits nerve impulses across synapses
a)
neuron
b)
neurotransmitter
c)
nerve
d)
action potential
49.
part of a neuron that receives information from other neurons
a)
axon
b)
dendrites
c)
myelin sheath
d)
synapse
50.
Location at which a neuron can transfer an impulse to another cell with the use of neurotransmitters is called __________.
a)
myelin sheath
b)
axon
c)
threshold
d)
synapse
51.
The part of the neuron that takes information away from the cell body is called a(n) _____________.
a)
dendrite
b)
axon
c)
cell body
d)
Schwann cell
52.
Label the Neuron-What does the letter "H" represent?
a)
Myelin Sheath
b)
Axon
c)
Axon Terminal
d)
Dendrite
53.
Label the Neuron-What does the letter "F" represent?
a)
Myelin Sheath
b)
Axon
c)
Axon Terminal
d)
Dendrite
54.
Label the Neuron-What does the letter "C" represent?
a)
Dendrite
b)
Axon
c)
Axon Terminal
d)
Cell Body
55.
Label the Neuron-What does the letter "A" represent?
a)
Dendrite
b)
Axon
c)
Myelin Sheath
d)
Node of Ranvier
56.
These carry signals from tissues and organs to the brain and spinal cord
a)
Sensory Neurons
b)
Motor Neurons
c)
Efferent Neurons
d)
Glial Cells
57.
These neuron processes transmit information from the sensory organs to the central nervous system
a)
efferent
b)
afferent
58.
These neuron processes transmit information from the central nervous system to the muscles and glands
a)
efferent
b)
afferent
59.
This part of the nervous system regulates involuntary actions such as heart function, blood pressure, breathing, digestion.
a)
Autonomic Nervous System
b)
Sensory Nervous System
c)
Motor Nervous System
d)
Peripheral Nervous System
60.
The part of the neuron that insulates the axon and increases the speed of the neural message within the neuron.
a)
Synapse
b)
Dendrite
c)
Myelin Sheath
d)
Axon Terminal Button
61.
This part of the neuron stores then releases neurotransmitters into the synapse.
a)
Axon 
b)
Dendrite
c)
Myelin Sheath
d)
Axon Terminal
62.

What is this? It coordinates muscle movements.

a)

Cerebrum

b)

Cerebellum

c)

Brain Stem

d)

Diencephalon

63.

What structure is grey in this picture. It controls conscious thought and memory?

a)

Cerebrum

b)

Cerebellum

c)

Brain Stem

64.

Which part of the brain controls your blood pressure and heart rate?

a)

brain stem

b)

cerebrum

c)

cerebellum

d)

adrenal gland

65.

Which statement best describes a reflex arc?

a)

Slow response that you have to think about

b)

Rapid response to protect body from harm

66.

Where would the nerve impulse start in this reflex arc?

a)

A

b)

C

c)

D

d)

E

67.

_____ neurons carry messages away from the central nervous system and out to muscles or glands. The RED neuron in diagram.

a)

sensory

b)

motor

c)

inter

d)

central

68.

How is a message delivered from the "sending" neuron to the "receiving" axon?

a)

sympathetic nerves

b)

hormones

c)

medulla oblongata

d)

neurotransmitters

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