exam- respiratory system

Question 1

Conducting System

Answer 1

Nasal Cavity
• Larynx / Pharynx
• Trachea
• Bronchi

Question 2

Conducting System Function

Answer 2

• Warms
• Filters
• Moistens
• Delivers
Air to the gas exchange regions of lungs (alveoli)

Question 3

components of the circulatory system

Answer 3

• heart
• blood
• blood vessels

Question 4

blood vessels

1. arteries
2. capillaries
3. veins

Answer 4

1. arteries DONT allow transfer, further away from the heart the smaller they get
   - cant transfer but can move
   - carry blood away from the heart
   - usually oxygenated blood
   - withstand high pressure
2. capillaries transfer blood to your tissues (gases, nutrients)
   - EXHANGE, DIFUSE, TRANSFER GASES
   - let air & small particles through (gases, nutrients)
   - thin walled
3. veins return blood to the heart
   - blood in the veins have no pressure - little movement
   - need assistance in returning blood to the heart
   - veins have valves

Question 5

vasoconstriction

Answer 5

when the muscle contracts and the artery gets smaller (restricted)

• reduces opening
• reduced blood flow

Question 6

vasodilation

Answer 6

when the blood vessel (muscle around the artery) relaxes

• opening becomes bigger
• heavier blood flows

Question 7

HEART

Answer 7

left side - oxygenated
right side - un oxygenated
-muscular pump

Question 8

function of the heart

Answer 8

• deliver oxygen/nutrients
• removes waste
• maintains body temp
  -fuel (muscle)
  contract > pump blood
  relaxes > fills up with blood

Question 9

ATRIA

Answer 9

• upper chambers
• left/right
• receives blood from body lungs
• left side - oxygenated back from the lungs

Question 10

VENTRICLES

Answer 10

• lower chambers

- left side- to body cells

Question 11

SEPTUM

Answer 11

• right side - to lungs de ox

- divides the heart into left and right

Question 12

VALVES

Answer 12

• allow blood flow in one direction only

- are between the atria

Question 13

heart rate

Answer 13

• the number of beats in 1 minute

Question 14

blood pressure

Answer 14

-SYSTOLIC - HIGH
the pressure in the arteries when the left ventricle contracts and forces blood out of the heart

-DIASTOLIC- HEALTHY 120
the pressure in the arteries when the left ventricles relates refills and therefore blood flow drops

Question 15

stroke volume

Answer 15

• the amount of blood pumped by the left ventricle per beat (contraction), rest 75-100ml

Question 16

cardiac output

Answer 16

• the amount of blood pumped from the left ventricle in a minute
  stroke volume x heart rate = cardio output

Question 17

mechanics of breathing

Answer 17

increased volume, pressure drops

decreased volume, pressure increases

Question 18

pleura

Answer 18

attaches to your ribs

Question 19

diaphragm

Answer 19

is a muscle

Question 20

alveoli

Answer 20

end of bronchioles, exchange gases (only place), alveoli is wrapped up in millions of capillaries to allow exchange of gases
SITE OF GASEOUS EXCHANGE

Question 21

path of blood

Answer 21

lungs 
left atrium 
left ventricle 
right ventricle 
right atrium 
body