WorksheetsExcretion & Homeostasis Quiz
Total questions: 20
Worksheet time: 21mins
Study the structure shown and answer the questions that follow. Name part labelled E.
Glomeruli
Glomerulus
Bowma's capsule
Efferent arteriole
Give a function of melanin.
Used to determine gender
Used to determine beauty
Used to control body temperature
Protection against harmful effects of the ultra violet rays from the sun
Which of the following feedback mechanism restores condition to normal?
Positive feedback mechanism
Detoxification feedback
Negative feedback mechanism
None of the above.
The diagram below represents a mammalian skin. Name part B
Sweat gland
Sebaceous gland
Erector pili muscle
Malpighian layer
The waste products produced by cellular life processes the most important of which are carbon dioxide, water, urea and mineral salts.
ATP
metabolic wastes
feces
enzymes
The functional unit of the kidneys which includes the glomerulus, Bowman's capsule and the Loop of Henle.
arteriole
veinule
alveoli
nephron
A) Urine passes through the ureters
B) Urea enters the kidneys
C) Urine enters the urethra
What do the lungs do in the excretory system
dispose of carbon dioxide through exhalation
disposes of smog thru exhalation
dispose of ultraviolet rays through exhalation
dispose of rays through exhalation
Which substance is NOT found in the liquid in the highlighted parts of a healthy person?
Glucose
Salt
Water
Urea
which of the organ will balance the glucose level in the body?
Stomach
Small intensine
Duodenum
Pancreas
What hormone is produced in the pancreas that lowers blood sugar?
Insulin
Glucagon
Ketones
Glucose
When glucose levels in the blood rise, your brain sends a signal to your pancreas. The pancreas releases insulin, which opens channels in cell membranes to allow glucose to enter the cell, lowering blood sugar levels.
This is an example of a:
Positive Feedback Mechanism
Negative Feedback Mechanism
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.
This is an example of a:
Positive Feedback Mechanism
Negative Feedback Mechanism
Identify the corrective mechanism that restores homeostasis.
Scenario: A person begins to exercise which causes their body temperature to increase. The temperature change is noticed (sensed) and the person begins to sweat and their body temperature decreases.
temperature changes is noticed
a person begins to exercise
body temperature increases
the person begins to sweat and their body temperature decreases
The wider of the two arterioles is the...
Efferent arteriole
Afferent arteriole
