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Homeostasis Summary

Total questions: 19

Worksheet time: 13mins

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

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.
Negative Feedback Loops:
a)
amplify processes
b)
prevent small changes from getting larger
c)
are initiated during childbirth
d)
are found only in plants
4.

If pressure increases on a mothers cervix during childbirth then oxytocin increases, this is an example of ____ feedback?

a)

Thermoregulation

b)

Blood Pressure

c)

positive

d)

negative

5.
What is the evaporation of a liquid to cool the body?
a)
Shivering
b)
Sweating
c)
Vasodilation
d)
Vasoconstriction
6.
What is involuntary contractions of voluntary muscles to warm up?
a)
Shivering
b)
Sweating
c)
Vasodilation
d)
Vasoconstriction
7.

When the body temperature drop below normal ranges, arterioles in the skin will

a)

dilate to allow less blood to flow to skin surface

b)

constrict to allow less blood to flow to skin surface

c)

dilate to allow more blood to flow to skin surface

d)

constrict to allow more blood to flow to skin surface

8.

Which hormone is released when blood sugar gets too high?

a)

glucose

b)

glucagon

c)

glycogen

d)

insulin

9.
Which of the following is NOT the system that regulate the blood sugar level?
a)
Circulatory system
b)
Muscle system
c)
Endocrine system
d)
Digestive system
10.
Failure in the production, secretion and intake of insulin by target cells can cause
a)
diabetes insipidus
b)
hypoglaecemia
c)
hyperglaecemia
d)
diabetes mellitus
11.

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

12.

Excess of glucose will be stored in what form?

a)

insulin

b)

glycogen

c)

glucagon

d)

glucose

13.

The group of organisms that use the process of homeostasis includes

a)

mammals, only

b)

animals, only

c)

plants and animals

d)

all living things

14.

Which organ in the body converts glucose into glycogen and vice versa?

a)

intestines

b)

liver

c)

pancreas

d)

heart

15.

When ADH is secreted, urine will:

a)

Be more dilute

b)

Be more concentrated

c)

Have a larger volume

d)

All of the above

16.

ADH is released from the pituitary gland into the:

a)

Circulatory system

b)

Endocrine system

c)

Nervous system

d)

All of the above

17.

ADH is created in the:

a)

Hypothalamus

b)

Posterior Pituitary Gland

c)

Brain

d)

Kidney

18.

Define homeostasis.

(a)  

19.

Define hormone. (Full definition, 4 marks)

(a)