B4 - Animal & plant tissues, organ systems

What does the left ventricle pump

blood around the body

what does the right ventricle pump

low oxygen, high carbon dioxide blood into the lungs

where does gas exchange take place

lungs/alveoli

in gas exchange, which gas is diffused into the alveoli

carbon dioxide

in gas exchange, which gas is diffused into the bronchial tubes

oxygen

What is the thickest blood vessel type

artery

where do arteries carry blood to

away from the heart

where do veins carry blood to

towards the heart

capillaries connect what

connect arteries and veins

Which blood vessel is this

Artery

which blood vessel is this

vein

which blood vessel is this

capillary

Do arteries carry de/oxygenated blood

carry oxygenated, except pulmonary artery

Do veins carry de/oxygenated blood

carry de oxygenated except pulmonary vein

Platelets

cell fragments that clot wounds

what does plasma transport

cells, CO2, hormones and waste

Atherosclerosis definition

building of fat in the coronary arteries

Atherosclerosis causes

-smoking (high blood pressure)

-high cholesterol (fatty substance carried in blood)

-lack of exercise ( increase in blood pressure and cholesterol)

What dew schtents dew

Inserted into the narrow artery then expand inside to increase oxygen flow to the heart

What are statins

Drugs that lower the amount of harmful cholesterol in blood, also stops the liver from producing too much cholesterol

cardiomyopathy symptoms

walls of the heart are stretched, thickened or stiff preventing blood from pumping

congenital heart disease

birth defect affecting the heart

Faulty valves

heart valves that are faulty, preventing the valve from opening or closing completely

faulty valves symptoms

-short of breath

-swelling of ankles and feet

-fatigue

faulty valves causes

-congenital

-rheumatic fever

-cardiomyopathy

-heart attack damage

-old age

-endocarditis ( bacterial infection in heart)

wuh is epidermal

waxy surface on plant

palisade mesophyll

site of photosynthesis, lotta chloroplasts

spongy mesophyll

space for gas exchange, also photosynthesis

meristem

tips of roots and shoots, site of cell differentiation

transpiration

Xylem transporting water + mineral ions from roots to stem and leaves

Xylem characteristics

-hollow tubes, strengthened by lignin

-one way flow

-transpiration increases with temp, humidity, wind, light

translocation

Phloem transporting dissolved sugar from leaves to rest of plant for use or storage

phloem characteristics

-made of elongated cells

-two way flow