a. cytology.
b. anatomy.
c. histology.
d. anatomic imaging.
e. physiology.
Ultrasound, X-rays, CT, and MRI are all examples of
a. anatomic imaging.
b. surface anatomy.
c. regional anatomy.
d. gross anatomy.
e. cytology.
A group of cells with similar structure and function, together with the extracellular substances located between them, form a(n)
a. organism.
b. organelle.
c. tissue.
d. organ.
e. organ system.
The basic living unit of all plants and animals is the
a. cell.
b. chemical.
c. organ.
d. organelle.
e. tissue.
6. Which organ system removes substances from the blood, combats disease, maintains tissue fluid balance, and absorbs fat from the digestive tract?
a. endocrine
b. integumentary
c. lymphatic
d. respiratory
e. urinary
7. Which organ system consists of skin, hair, nails, and sweat glands?
a. endocrine
b. integumentary
c. lymphatic
d. respiratory
e. urinary
8. Which organ system consists of hormone-secreting glands, such as the pituitary and thyroid glands?
a. endocrine
b. integumentary
c. lymphatic
d. respiratory
e. urinary
Test 2
Human Body Parts
Instructions: Chose the correct answer.
1. What is the smallest living part of the body?
a) tissue
b) nerve
c) cell
2. What gas does your body need?
a) oxygen
b) carbon dioxide
c) pollution
3. How is oxygen carried to the cells?
a) nerves
b) blood
c) tissue
4. Nerves carry messages from a body part to the _________.
a) feet
b) brain
c) ear
5. Allpeoplegrow _______.
a) differently
b) at the same rate
c) when they want to
6. This is where food is changed into a thin liquid.
a) nerves
b) heart
c) small intestine
7. Our bodies grow because our cells make new ______.
a) bones
b) tendons
c) tissue
8. What does your body get rid of when you breath out?
a) oxygen
b) carbon dioxide
c) water
9. Your heart and brain are two of your ___________.
a) organs
b) tissues
c) nerves
10. How many senses do you have?
a) ten
b) two
c) five
Theme 2.
THE CARDIOVASCULAR SYSTEM
The circulatory system is made up of the vessels and the muscles that help and control the flow of the blood around the body. This process is called circulation. The main parts of the system are the heart, arteries, capillaries and veins.
As blood begins to circulate, it leaves the heart from the left ventricle and goes into the aorta. The aorta is the largest artery in the body. The blood leaving the aorta is full of oxygen. This is important for the cells in the brain and the body to do their work. The oxygen rich blood travels throughout the body in its system of arteries into the smallest arterioles.
On its way back to the heart, the blood travels through a system of veins. As it reaches the lungs, the carbon dioxide (a waste product) is removed from the blood and replace with fresh oxygen that we have inhaled through the lungs.
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Vocabulary
1. to make up -
2. vessel -
3. flow -
4. circulation -
5. ventricle -
6. to remove -
replace - to inhale -
Veins and Arteries
Arteries
Arteries are tough, elastic tubes that carry blood away from the heart. As the arteries move away from the heart, they divide into smaller vessels. The largest arteries are about as thick as a thumb. The smallest arteries are thinner than hair. These thinner arteries are called arterioles. Arteries carry bright red blood! The color comes from the oxygen that it carries.
Veins
Veins carry the blood to the heart. The smallest veins, also called venules, are very thin. They join larger veins that open into the heart. The veins carry dark red blood that doesn't have much oxygen. Veins have thin walls. They don't need to be as strong as the arteries because as blood is returned to the heart, it is under less pressure.
Vocabulary
tough -
tube -
join -
wall-
Heart
Heart is the strongest muscle? Heart is divided into two sides. The right side pumps blood to your lungs where it picks up oxygen. The left side pumps oxygen-soaked blood out to your body. They do not work on their own, but together as a team. The body's blood is circulated through the heart more than 1,000 times per day. Between five and six thousand quarts of blood are pumped each day. Your heart is about the same size as a fist.
Vocabulary
to pump - pick up - oxygen-soaked - quart () fist -
Blood
Blood is thicker than water and has a little bit salty taste. In an adults body there is 10.6 pints of blood circulating around. In their blood there is billions of living blood cells floating in a liquid called plasma. If you took a small sample of this blood and liquid it into a test tube and then put it in a machine called a centrifuge, you would be able to see the layers of this blood. This machine spins the blood around so fast that it separates the red blood cells, from the white blood cells, from the platelets. The red blood cells sink to the bottom because they are the heavier, more solid parts, but the plasma remains at the top because it is lighter. The plasma is 95% water and the other 5% is made up of dissolved substances including salt.
Vocabulary
1. thick -
2. little bit -
3. adult -
4. to float -
5. liquid -
6. to separate -
7. platelet -
8. solid -
9. to remain -
10. to sink -
11. dissolved -
Exercises
