Chapter 4 Heart And Breathing

Question 1

Closed circulation

Answer 1

Blood is enclosed in blood vessels

Question 2

Double circulation

Answer 2

The blood goes through your heart two times in one circuit

Question 3

Parts of the heart

Answer 3

On the first page of goodnotes chapter 4.3

Question 4

Stent

Answer 4

A stent is a metal mesh placed in the artery. A tiny ballon is inflated to open the blood vessel and Stent at the same time

Question 5

Statins

Answer 5

They reduce blood cholesterol levels and this slows down at which fatty materials is deposited in the coronary arteries.

Question 6

Replacement heart valves

Answer 6

this are replacements for your heart valves that can last up to 12-15 years. Pros to this will be people can have a longer life with valves that help blood flow through the body. However, you will need to take medicine everyday to prevent blood clogging up valve.

Question 7

Artificial pacemaker

Answer 7

Replaces the natural pacemaker. This helps the heart beat 60-70 times a minute. This works by the pacemaker sending strong, regular and electrical signals to the heart making it beat. Pros to this will be your heart will beat a consistent rate always 60-70 beats a minute

Question 8

Artificial heart

Answer 8

When a natural heart completely malfunctions the patient will have to wait to get a donation heart from another person but to do this doctors have to measure if the tissue is a match. This takes a lot of time so the artificial heart is the solution for helping patients

Question 9

Parts of the lung that helps us breath

Answer 9

Trachea
Bronchi
Alveoli
Capillary

Question 10

Trachea

Answer 10

The trachea, also called the windpipe, is a tube that connects the right and left to the lungs, allowing the passage of air, and so is present in almost all living things with lungs

Question 11

Bronchi

Answer 11

Bronchi are the main passageway into the lungs. When someone takes a breath through their nose or mouth, the air travels into the larynx all the way down to the lungs.

Question 12

Alveoli

Answer 12

Alveoli are tiny sacs within our lungs that allow oxygen and carbon dioxide to move between the lungs and bloodstream.

Question 13

Capillary

Answer 13

any of the minute blood vessels that form networks throughout the bodily tissues; it is through the capillaries that oxygen, nutrients, and wastes are exchanged between the blood and the tissues.

Question 14

Inhalation

Answer 14

Air is drawn into the lungs 
External and internal muscles contract
Volume of chest increases
Diaphragm moves upwards
Pressure inside the chest decreases
Ribs moves upwards and out

Question 15

Exhalation

Answer 15

Air is forced out of the lungs 
External and internal muscles relax 
Chest volume decreases 
Diaphragm flattens 
Pressure inside the chest increases 
Ribs move downward and in

Question 16

Phloem in plant respiration

Answer 16

Phloem tissue can transport sugars made by photosynthesis from the leaves to the rest of the plant. This include the transport of growing areas of stems where dissolved sugars needed for growth of plant cells

Question 17

Xylem

Answer 17

Xylem is the other tissue in plants that transport water and minerals ion from the soil to around the plant and the stem/leaves.

Question 18

What effects the transpiration in palnts

Answer 18

Temperature- the higher the temperature the faster the transportation. This is because water molecules move more rapidly.
Humidity: The higher the humidity the slower this is because the rate if diffusion is less when low concentration gradient
Air movements: the winder the day the quicker the rate of transportation