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Homeostasis

Total questions: 50

Worksheet time: 36mins

Name
Class
Date
1.

What is an example of a positive feedback mechanism?

a)
b)
2.
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
3.
The term for maintaining internal temperature is: 
a)
Thermoregulation
b)
Thermometer
c)
Homeothermal
d)
Homeostasis
4.
Rapid growth during puberty causes your body to release more and more growth hormones. As you grow, more and more growth hormones are released until puberty is reached, and then the hormones stop.
a)
Positive Feedback Response
b)
Negative Feedback Loop 
5.
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
6.
Which system sends electrical messages that helps control the body's responses to internal and external changes?
a)
nervous
b)
endocrine
c)
reproductive
d)
integumentary
7.

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

a)

Insulin

b)

Glucagon

c)

Ketones

d)

Glucose

8.
These two body systems regulate feedback mechanisms.
a)
Skeletal & Muscular
b)
Skeletal & Endocrine
c)
Muscular & Nervous
d)
Endocrine & Nervous
9.

ADH

a)

Inhibits the absorption of water in the proximal convoluted tubule

b)

Inhibits the absorption of water in the distal convoluted tubule

c)

Increases the absorption of water in the proximal convoluted tubule

d)

Increases the absorption of water in the distal convoluted tubule

10.

ADH is created in the:

a)

Hypothalamus

b)

Posterior Pituitary Gland

c)

Brain

d)

Kidney

11.

ADH is released from the pituitary gland into the:

a)

Circulatory system

b)

Endocrine system

c)

Nervous system

d)

All of the above

12.

When ADH is secreted, urine will:

a)

Be more dilute

b)

Be more concentrated

c)

Have a larger volume

d)

All of the above

13.

When you drink a larger volume of water than is required by your body tissues:

a)

ADH secretion will be increased

b)

ADH secretion will be inhibited

c)

ADH secretion will not be affected

d)

None of the above

14.

When an organism has sweated a great deal and has not drank much water, this will be detected as:

a)

Low blood pressure

b)

Low blood volume

c)

High blood concentration

d)

All of the above

15.

Cells that detect high blood concentration are called:

a)

Chemoreceptors

b)

Osmoreceptors

c)

Thermoreceptors

d)

Nociceptors

16.

Changes in blood volume and concentration are detected in the brain cells in the:

a)

Posterior Pituitary Gland

b)

Anterior Pituitary Gland

c)

Thalamus

d)

Hypothalamus

17.
Identify Letter H
a)
Ureter
b)
Renal Capsule
c)
Renal Coretx
d)
Renal Medulla
18.

Identify Letter B

a)

Renal Pyramid

b)

Renal Artery

c)

Renal Vein

d)

Renal Medulla

19.

Identify Letter C

a)

Renal Pyramid

b)

Renal Artery

c)

Renal Vein

d)

Renal Medulla

20.

Anti-diuretic hormone (ADH) is released by which gland of the endocrine system

a)

Thyroid

b)

Pituitary

c)

Ovaries

d)

Adrenal

21.

Anti-diuretic hormone (ADH) affects the permeability of which section of the nephron tubules

a)

Proximal (first) convoluted/coiled tubual

b)

Loop of Henle

c)

Distal (second) convoluted/coiled tubual

d)

Collecting duct

22.
Identify Letter D
a)
Adrenal Gland
b)
Renal Artery
c)
Renal Vein
d)
Renal Pelvis
23.

Recall where in the nephron ultrafiltration occurs.

a)

Proximal convoluted tubule

b)

Collecting duct

c)

Urethra

d)

Bowman's capsule

24.

Recall what structure carries filtrate from the nephron to the renal pelvis.

a)

Collecting duct

b)

Bowman's capsule

c)

Loop of Henle

d)

Distal convoluted tubule

25.

That which detects the stimulus is the...

a)

response

b)

stimulus

c)

cause

d)

receptor

26.

State what urine is a combination of

a)

Faecal matter

b)

Water

c)

Blood

d)

Salts

e)

Urea

27.

Recall what structure carries filtrate from the renal pelvis to the bladder.

a)

Loop of Henle

b)

Distal convoluted tubule

c)

Ureter

d)

Urethra

28.
Identify Letter H
a)
Renal Artery
b)
Renal Vein
c)
Descending Loop of Henle
d)
Proximal Convoluted Tubule
29.

If you are dehydrated (low water potential in the blood), the body must conserve water. To do so, the brain triggers the pituitary gland to ...

a)

release MORE ADH, making the collecting duct MORE permeable

b)

release LESS ADH, making the collecting duct LESS permeable

c)

release MORE ADH, making the collecting duct LESS permeable

d)

release LESS ADH, making the collecting duct MORE permeable

30.
An organism that has a variable body temperature should be classed as:
a)
Poikilotherm
b)
Homeotherm
c)
Endotherm
d)
Ectotherm
31.
An organism that has a stable body temperature should be classed as:
a)
Poikilotherm
b)
Homeotherm
c)
Endotherm
d)
Ectotherm
32.
An organism that produces its own body heat should be classed as:
a)
Poikilotherm
b)
Homeotherm
c)
Endotherm
d)
Ectotherm
33.
Why do marine mammals need large amounts of blubber?
a)
Prevent excess heat loss
b)
Prevent starvation
c)
Increase metabolic rate
d)
Decrease heat generation
34.
Which is NOT a function of the skin?
a)
Insulation
b)
Movement
c)
Excretion
d)
Thermoregulation
35.
The term for maintaining internal temperature is: 
a)
Thermoregulation
b)
Thermometer
c)
Homeothermal
d)
Homeostasis
36.
Which of the following is NOT part of the integumentary system?
a)
Skin
b)
Cartilage 
c)
Nails
d)
Hair
37.
What layer of epidermis does mitotic division occur?
a)
stratum lucidum
b)
stratum basale
c)
stratum granulosum
d)
stratum corneum
38.
What layer of the epidermis is 1 pointing to?
a)
Stratum Basale
b)
Stratum Spinosum
c)
Stratum Granulosum
d)
Stratum Corneum
39.
The pigment our skin manufactures to protect us from UV radiation.
a)
Globulin
b)
Melanin
c)
Keratin
d)
Interlukin
40.
Main function of eccrine gland is to:
a)
A. secrete cerumen
b)
B. Regulation of body temperature
c)
C. Responsible for “cold sweat” associated with stress
d)
D. Is a protein that is made of melanocytes
41.
Which of the following factors is not responsible for heat loss? 
a)
Wetness
b)
Wind chill
c)
Excessive fat deposits 
d)
Inadequate clothing
42.
What does the hypothalamus do? 
a)
Makes humans shiver
b)
Regulates "automatic" functions like temperature and thirst
c)
Responsible for regrowth of skin
d)
Responsible to make us sweat when needed
43.
Low blood sugar
a)
anemia
b)
hyproglucemia
c)
hypoglycemia
d)
hyperglycemia
44.
Sugar that is stored in the liver for emergency use
a)
glucose
b)
glycogen
c)
glucagon
d)
sucrose
45.
the sugar we measure for "blood sugar"
a)
glucose
b)
glycogen
c)
glucagon
d)
sucrose
46.
hormone that lowers blood sugar
a)
glucose
b)
glycogen
c)
glucagon
d)
insulin
47.
liver uses fats and amino acids to create a glucose molecule
a)
gluconeogenesis
b)
glycogenolysis
c)
glycogenesis
d)
glyconemia
48.
liver breaks glycogen
a)
gluconeogenesis
b)
glycogenolysis
c)
glycogenesis
d)
glyconemia
49.
normal blood sugar should be around
a)
80 mg/100mL
b)
120 mg/100mL
c)
100 mg/100mL
d)
200 mg/100mL
50.
when blood sugar spikes above normal, excess sugar is diverted to 
a)
kidneys
b)
liver
c)
fat
d)
pancreas

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