Unit 11 Circulation

Question 1

The system of blood and the structures through which it passes is known as the

Answer 1

Circulatory System

Question 2

system blood is contained in blood vessels part of time, hemocoel is present, where blood leaves blood vessels

Answer 2

open circulatory system

Question 3

system where blood is contained in blood vessels at all times

Answer 3

Closed circulatory System

Question 4

Which one of the following organisms has a closed circulatory system?

Answer 4

earthworm

Question 5

Which one of the following organisms has an open circulatory system?

Answer 5

grasshopper

Question 6

Which organism above has 5 aortic arches and a dorsal and ventral blood vessel?

Answer 6

earthworm

Question 7

Annelids, and animals with backbones, known as

Answer 7

vertebrates (closed circulatory system)

Question 8

Define and give an example of an animal with a single loop system

Answer 8

circulatory system that delivers blood heart to gills

Ex. Fish

Question 9

Define and give an example of an animal with a double loop system

Answer 9

circulatory system with two circuits/loops pump to lung and blood pumped to rest of the body
Ex. Mammals

Question 10

Two chambered hearts are found in

Answer 10

fish

Question 11

three chambered hearts are present in

Answer 11

amphibians and ceptilles

Question 12

In the circulatory system, the pump is a

Answer 12

heart

Question 13

In the circulatory system, the liquid is called the

Answer 13

blood

Question 14

The largest blood vessels in the body that are under high pressure are

Answer 14

arteries

Question 15

The largest of these is called the what and leaves the heart to deliver oxygenated blood to the body.

Answer 15

aorta

Question 16

The smallest blood vessels through which gas exchange (O2 and CO2) occurs are known as

Answer 16

capillaries

Question 17

Blood vessels that have valves to prevent backflow of blood are

Answer 17

veins

Question 18

A healthy human heart at rest will beat approximately

Answer 18

70 per minute

Question 19

Blood helps regulate body temperature and fight infections.

Answer 19

true

Question 20

Plasma is about 50 percent water.

Answer 20

false 90

Question 21

Hemoglobin is a protein in red blood cells that binds to oxygen.

Answer 21

true

Question 22

White blood cells are responsible for blood clotting.

Answer 22

false platelets cells

Question 23

Which type of blood cell carries oxygen and contains hemoglobin?

Answer 23

RBC

Question 24

Which blood cells help fight infection?

Answer 24

WBC

Question 25

Of the 3 types of blood cells, which type is found in the greatest number?

Answer 25

RBC

Question 26

Which type of blood cell is normally the lowest in number in a healthy individual?

Answer 26

WBC

Question 27

In a normal blood sample, the % of the sample that makes up plasma is

Answer 27

55%

Question 28

while the % of blood cells is_____.

Answer 28

45%

Question 29

90% of plasma is made up of what, with dissolved proteins, nutrients, salts,

Answer 29

H20 WATER

Question 30

The instrument used to measure blood pressure is known as a blood pressure cuff or

Answer 30

sphygmomanometer

Question 31

The average adult blood pressure is

Answer 31

120/80

Question 32

The top number reflects the

Answer 32

systolic

Question 33

the bottom number reflects the

Answer 33

diastolic

Question 34

A medical term used to describe high blood pressure is

Answer 34

hypertension

Question 35

List 3 ways one can reduce high blood pressure

Answer 35

reduce stress stop smoking exercise regular lower in salt take

Question 36

An EKG, or electrocardiogram is a test used to measure the

Answer 36

electrical activity of the heart

Question 37

The human heartbeat starts in the right atrium, where the

Answer 37

pacemaker or SA node is located

Question 38

If one has an irregular heartbeat, an artificial

Answer 38

pacemaker

Question 39

What was the (part of the brain stem) controls the heartbeat rate in humans.

Answer 39

Medulla Oblongata

Question 40

The four chambers of the human heart include two

Answer 40

atria and ventricles

Question 41

The what has the thickest muscle wall because it must pump blood against gravity and to all parts of the body.

Answer 41

left ventricle

Question 42

The what divides the two lower chambers of the heart and prevents blood from mixing

Answer 42

septum

Question 43

the what side of the heart pumps deoxygenated blood to the

Answer 43

right

Question 44

while the left side of the heart pumps oxygenated blood to the

Answer 44

body

Question 45

The what arteries, on the outside of the heart, supply the heart muscle itself with needed oxygen and nutrients.

Answer 45

coronary

Question 46

If one of these arteries becomes blocked, this results in a

Answer 46

heart attack

Question 47

plaque builds up in artery walls

Answer 47

atherosclerosis

Question 48

blood supply to the brain is interrupted

Answer 48

stroke

Question 49

also called hypertension

Answer 49

high blood pressure

Question 50

heart muscle cells die from lack of oxygen

Answer 50

heart attack