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Yr9 - Systems Coordination

Total questions: 62

Worksheet time: 46mins

Name
Class
Date
1.
Homeostasis
a)
allows for a wildly fluctuating internal environment
b)
is impossible in vertebrates
c)
is the maintenance of a relatively stable internal environment and often incorporates a form of feedback regulation
d)
is the maintenance of a relatively stable external environment and often incorporates a form of feedback regulation
2.
Homeostasis in the human body is often maintained by a: 
a)
neutral feedback loop 
b)
solar feedback loop
c)
positive feedback loop
d)
negative feedback loop
3.
Positive feedback is when the change caused by the stimulus is
a)
decreased
b)
non existant
c)
increased
d)
changes constantly
4.
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 
5.
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 
6.

What is an example of a positive feedback mechanism?

a)
b)
7.

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

a)

Insulin

b)

Glucagon

c)

Ketones

d)

Glucose

8.

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

9.

High blood sugar levels after a meal usually stimulate

a)

Glucagon release from the liver

b)

Glucagon release from the pancreas

c)

Insulin release from the liver

d)

Insulin release from the pancreas

10.

What type of feedback system does the model represent?

a)

positive

b)

negative

c)

neutral

d)

glyogen

11.

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

12.

Why is the maintenance of homeostasis important to multicellular organisms?

a)

They must keep their internal environment within a narrow range of conditions.

b)

They require the ability to adjust their internal environment to match their external environment

c)

Their cells need to be able to respond rapidly to drastic changes in their external enviornment

d)

Their internal environment must provide their cells with a wide range of conditions

13.
Changes in an organism's environment that cause a response
a)
Tropism
b)
Hormone
c)
Stimuli
d)
Response
14.

Which is central nervous system

a)

muscle and gland

b)

brain and spinal cord

c)

spinal nerve and cranial nerve

d)

nose and mouth

15.

Which two senses are generally triggered by a chemical stimulus?

a)

Hearing and Touch

b)

Touch and Smell

c)

Smell and Taste

d)

Taste and Sight

16.

Which two senses are typically triggered by mechanical stimuli?

a)

Touch and Hearing

b)

Hearing and Smell

c)

Smell and Taste

d)

Taste and Sight

17.

Which type of stimulus is associated with smell?

a)

Chemical

b)

electromagnetic

c)

mechanical

d)

photomechanical

18.

Which type of stimulus is generally associated with taste?

a)

Chemical

b)

Electromagnetic

c)

Mechanical

d)

Photomechanical

19.

Which type of stimulus is generally associated with touch?

a)

chemical

b)

mechanical

c)

electromagnetic

d)

photomechanical

20.
Stimulus...
a)
A change that prompts an action-the cause
b)
The ability to maintain a stable internal environment (type of equilibrium or balance)
c)
How an organism reacts to a change and results in a change in behavior- the effect
d)
Constant and balanced environment
21.
A cheetah's water levels are becoming too high, and its thirst is quenched. In response to this, the cheetah's body will send internal signals...
a)
Of hunger, since the cheetah needs food
b)
Of thirst, since all living things need water
c)
To sweat, so the organism can shed some of the water
d)
Of quenched thirst, so the organism will stop drinking water
22.
Which of the following is an example of internal stimuli?
a)
Smelling pizza and then eating a piece of pizza
b)
Seeing ice cream on television and then eating a bowl of ice cream
c)
After working out feeling sore in your legs and then placing ice on the sore spot
d)
After working out seeing a bottle of water and drinking water
23.
Jackson is around his friend who is constantly sick. Jackson begins coughing and sneezing the next day at school. What is the possible stimulus and response?
a)
Internal stimulus is coughing, the response is getting sick
b)
External stimulus is coughing, the response is getting sick
c)
Internal stimulus is germs/bacteria, the response is coughing
d)
External stimulus is germs/bacteria, the response is coughing
24.

Human nervous system. Label A.

a)

Brain

b)

Spinal cord

c)

Cranial nerves

d)

Spinal nerves

25.

Human nervous system. What is B?

a)

Brain

b)

Spinal cord

c)

Cranial nerves

d)

Spinal nerves

26.

What is labeled Z?

a)

Nervous system

b)

Central nervous system

c)

Peripheral system

d)

Peripheral nervous system

27.

The human nervous system is able to detect ______________.

a)

rsponses

b)

stimuli

c)

impulses

d)

information

28.

A human nervous system can produce an appropriate _____________.

a)

answers

b)

responses

c)

interpretation

d)

stimuli

29.

Voluntary actions are taken under _________________ control.

a)

conscious

b)

unconscious

c)

semi-conscious

d)

caution

30.

Involuntary actions are taken under _________________ control.

a)

conscious

b)

unconscious

c)

semi-conscious

d)

caution

31.

Example of involuntary action is ____________________.

a)

reading

b)

talking

c)

breathing

d)

writing

32.

Example of voluntary action is ____________________.

a)

peristalsis

b)

heartbeat

c)

breathing

d)

reading

33.

What is the endocrine system?

a)

A system of vessels that circulates blood around the body.

b)

A group of bones and tissue that provides support and structure for the body.

c)

A group of glands that work together with the nervous system to coordinate all body functions

d)

A group of organs that is responsible for eliminating wastes.

34.

What is the main function of the endocrine system?

a)

It creates chemicals, or hormones, that are sent around the body to maintain homeostasis.

b)

It creates electrical messages that are sent around the body to maintain homeostasis.

c)

It maintains the correct level of oxygen in the body to maintain homeostasis.

d)

It releases waste from the body to maintain homeostasis.

35.

The "master gland" is known as the __________________.

a)

thyroid gland.

b)

adrenal gland.

c)

pancreas.

d)

pituitary gland.

36.
The gland that stimulates body metabolism
a)
Thyroid
b)
testes
c)
ovary
d)
adrenal
37.

The adrenal glands release adrenaline to help the body regulate _________________.

a)

diseases

b)

body temperature.

c)

stress.

d)

hormones.

38.

Which of the following are chemicals that travel in the blood and cause changes in different parts of the body?

a)

Hormones

b)

Glands

c)

Parathyroid

d)

Adrenal Gland

39.

Hormone regulation operates under which type of feedback mechanism?

a)

positive feedback

b)

negative feedback

c)

zero feedback

d)

Hormones are not regulated

40.

Feedback loops are important because they allow organisms and the environment to

a)

change based on new inputs

b)

fall apart

c)

change based on new outputs

d)

maintain balance

41.
What is gland #3?
a)
Adrenal Gland
b)
Pancreas
c)
Ovaries
d)
Testes
42.
Letter H is pointing to
a)
Thymus
b)
Pancreas
c)
Pituitary
d)
Pineal
43.
Letter I is pointing to
a)
Testes
b)
Oviducts
c)
Ovaries
d)
Adrenals
44.

Letter J is pointing to

a)

Ovaries

b)

Pineal Gland

c)

Adrenal

d)

Testes

45.

The gland labeled 4 in the diagram is?

a)

the thymus gland

b)

the thyroid gland

c)

the parathyroid glands

d)

the adrenal glands

46.

What structure is this?

a)

Pancreas

b)

Thyroid

c)

Parathyroid

d)

Adrenal glands

47.
Negative Feedback Loops:
a)
amplify processes
b)
prevent small changes from getting larger
c)
are initiated during childbirth
d)
are found only in plants
48.
If you have diabetes, you most likely have a problem with this hormone.
a)
ADH
b)
Glucagon
c)
Insulin
d)
PTH
49.

Produces the hormone insulin and glucagon, which controls the level of glucose in the blood.

a)

Thyroid Gland

b)

Pancreas

c)

Thymus Gland

d)

Pituitary Gland

50.

These release testosterone, which controls changes in a male's body and regulates sperm production.

a)

Ovaries

b)

Target Cells

c)

Parathyroids

d)

Testes

51.
Are chemicals that travel in the blood and cause changes in different parts of the body
a)
Hormones
b)
Glands
c)
Parathyroid 
d)
Adrenal Gland 
52.
Where are the adrenal glands located?
a)
One on each side of the larynx
b)
On top of the kidneys
c)
Behind the orbital bone
d)
The inner ear
53.
Which of the following is a function of the Endocrine System?
a)
growth and development
b)
maintaining homeostasis
c)
response to stress and injury
d)
all of the above
54.
Which type of neuron transmits a signal from a sense organ to the central nervous system?
a)
sensory
b)
relay
c)
motor
d)
efector
55.
Which type of neuron transmits a signal from the central nervous system to an effector such as a muscle?
a)
sensory
b)
motor
c)
relay
d)
dendrite
56.
Which part of the nervous system is not involved in producing reflex actions?
a)
brain
b)
spinal cord
c)
receptors
d)
sensory
57.
Which of these is not a reflex response?
a)
moving a hand off something hot
b)
sneezing
c)
picking up a book
d)
wink of eyes
58.
What is the eye an example of?
a)
a stimulus
b)
a sense organ
c)
a relay neuron
d)
a part of nerve cell
59.

A nerve cell is also known as a

answer choices

a)

cerebrum

b)

neuron

c)

cerebellum

d)

nucleus

60.

The gaps between neurons are called

answer choices

a)

Effectors

b)

neurotransmitters

c)

reflexes

d)

synapses

61.

The neurons that conduct information towards the CNS are _________.

answer choices

a)

interneurons

b)

motor neurons

c)

sensory neurons

d)

efferent neurons

62.

Which of the following is part of the peripheral nervous system?

answer choices

a)

BRAIN

b)

SPINAL CHORD

c)

HEART MUSCLE

d)

TASTE BUDS ON TONGUE

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