Circulatory System

Question 1

What is the one animal with no circulatory system?

Answer 1

Jellyfish

Question 2

2 types of animal circulatory system?

Answer 2

Open = mainly insects
Closed = other animals

Question 3

What can a closed system control?

Answer 3

The speed of blood flow
The pressure of blood
Distrubution of blood in the body

Question 4

What are the 4 parts of the circulatory system

Answer 4

Cappilary, Heart, Vein, & Artery

Question 5

Function of veins

Answer 5

Transport blood to heart from lungs & other body parts

Question 6

Function of Arteries

Answer 6

Transport blood away from the heart to the lungs and other body parts

Question 7

Characteristics of Arteries

Answer 7

Elastic Thick Walls
Areas with high blood pressure a pulse can be felt

Question 8

Characteristics of Veins

Answer 8

Thin walls with valves
Wide diameter compared to other vessels
Low pressure

Question 9

Function of valves

Answer 9

Open to let blood flow in and close to not let it flow backwards.

Question 10

Characteristics of Cappilaries

Answer 10

Very small & thin
Blood flows very slowly
Exchange of oxygenated of deoxyganted blood
Joins the arteries to veins

Question 11

Types of closed systems

Answer 11

Single & Double

Question 12

Single Circulatory system means

Answer 12

Blood flows through the heart only once fish have this kind of system

Question 13

What happens in single system for fish?

Answer 13

blood absorbs oxygen in the gills
then goes to body cells to release it
Then the blood returns to the heart

Question 14

Double Circulatory System means

Answer 14

Blood goes around the body 2 times
Blood is pumped to the lungs then returned to the heart
then out to the rest of the body
Found in mammals & birds

Question 15

What happens in double circulatory system?

Answer 15

RBCs pick up O2 blood flows through the lungs

Blood carries oxygenated blood

Drops off oxygenated blood and picks up deoxygenated blood

Question 16

What is the heart made of?

Answer 16

All muscle

Question 17

How many times does it beap per minute?

Answer 17

70 times on average

Question 18

4 chambers of the heart

Answer 18

Right atrium
Left atrium
Right ventricle
Left ventricle

Question 19

atria are

Answer 19

thin walled chambers recieve blood from veins

Question 20

ventricles are

Answer 20

thick walled chambers that pump blood out of the heart

Question 21

Difference in wall thickeness bec

Answer 21

Due to varations in the amount of myocardium present.
= amount of force chambers need to generate

Question 22

Pulmonary =

Answer 22

Related to lungs

Question 23

Pulmonary arteries function =

Answer 23

transports deoxygenated blood away from heart towards lungs

Question 24

Pulmonary veins function =

Answer 24

transports deoxygenated blood away from the lungs towards the heart

Question 25

Vene cava function =

Answer 25

transports deoxygenated blood towards the heart

Question 26

Aorta function =

Answer 26

transports oxygenated blood towards the rest of the body

Question 27

How does blood flow around the heart?

Answer 27

Superior Vene Cava –> Right Atrium –> Right Ventricle –> Pulmonary Atrery –> Lungs –> Pulmonary Vein –> Left Atrium –> Left Ventricle –> Valve –> Aorta