Download Unit 4

Grade 11 University Biology – Unit 4 Animal Structures
UNIT 4 TEST - ANSWERS
Student Name:
Mark:
______________________
___________ / 45
Part A – Multiple Choice (9 Total Marks)
1. Microscopic air sacs in the lungs that allow for gas exchange.
a. Trachea
b. Alveoli
c. Goblet Cells
d. Bronchioles
2. These tubes carry deoxygenated blood to the heart?
a. Arteries
b. Capillaries
c. Aorta
d. Veins
3. What is the Residual Volume of the lungs?
a. Six litres
b. Five litres
c. Two litres
d. One litre
4. A hollow, muscular organ about the size of your fist?
a. Small intestine
b. Kidney
c. Heart
d. Lung
5. In which organ do you find NEPHRONS?
a. Kidney
b. Lungs
c. Small intestine
d. Heart
6. A chemical released by one type of cell that affects other cells?
a. Amine
b. Peptide
c. Hormone
d. Steroid
7. This organ produces BILE to break down fat?
a. Pancreas
b. Kidney
c. Stomach
d. Liver
8. The total length of the digestive tract
a. 9 m
b. 7.5 m
c. 2 m
d. 1 m
9. What is the name of the muscle that separates the left and right sides of the heart?
a. Cardiac Muscle
b. Septum
c. Atria
d. Atrioventricular Valve
Part B – Short Answer (20 Total Marks)
10. What are INTERNEURONS? Explain how they work. (3 marks)
Reflex action for fast response; impulse to spinal cord so there is a “more”
direct linkage between the sensor neurons and motor neurons; does NOT
involve brain
11. The CIRCULATORY SYSTEM has FOUR functions? What are the four functions (4
marks)
Transport of oxygen and carbon dioxide
Distribution of nutrients and transport of wastes
Maintenance of body temperature
Circulation of hormones
12. There are over 96,000 km of blood vessels in your body that provide nourishment to
your 100 trillion cells. What is the MAXIMUM DISTANCE that any one cell is away
from a blood vessel? (1 mark)
Two cells
13. Why is fat important to the proper functioning of the human body. Provide two
reasons. (2 marks)
 Supplies and stores energy
 Helps body synthesize hormones
 Protects organs
 Insulates the body
 Provides protective coating around nerves
14. During digestion, how are carbohydrates broken down to glucose for absorption?
Your answer must include the steps involved and the organs involved. (4 marks)
CARBOHYDRATES (amylase from salivary glands and pancreatic amylase
from the pancreas) to MALTOSE (maltase from the intestinal cells of the small
intestine) to GLUCOSE
15. The digestive system has many components. Name the function and the process of
completing its function of any two from the following list. (4 marks)
Stomach
Small Intestine
Large Intestine
Villi and Microvilli
Liver
Gall Bladder
Part C – Human Organ System (6 Total Marks)
16. We have been studying the organ systems of the human body. Pick one system
(NOT the digestive system) and describe how it works. Your answer should include
(1) the purpose of the system, (2) major organs or parts involved and (3) major
processes (i.e., How does it work?)
Part D – Diagrams (10 Total Marks)
17. Label the parts of the heart where indicated.
Aorta _________________
Left Atrium___________________
Valve _______________
Cardiac Muscle ______________
Right Ventricle ______________________
18. Label the parts of the digestive system where indicated
Esophagus _________________
Liver _____________
Stomach __________________
Small Intestine _______________
Large Intestine ___________