Bio Unit 2 Animal Physiology Chp 3 Blood and Circulation

What are the roles of blood transport?

Carry O2 from the lungs to other parts of the body. 

Carry CO2 from other parts of the body to the lungs.

Carry nutrients from the gut to all parts of the body.

Carry urea from the liver to the kidneys.

FAQ + OBJQ

Why don't large invertebrates need internal transport?

They have a large surface area-to-volume ratio. So diffusion is sufficient, so no internal transport is required.

FAQ + OBJQ

Why is an internal transport system required in human invertebrates?

Humans have a small surface area-to-volume ratio. So diffusion is insufficient. Therefore, an internal transport system is required for efficient diffusion.

OBJQ

What are the components of the internal transport system and their functions? (No need for liver and kidney)

Heart→pump the blood 

Blood vessel (Artery→carry oxygenated blood from the heart to other parts of the body. Vein→carry deoxygenated blood from other parts of the body to the heart. Capillary→gas exchange and nutrient exchange in the body 

Lung→oxygen loading or gas exchange

Kidney

Liver

Define septum

Seperate right and left sides of the heart to prevent deoxygenated and oxygenated blood from mixing

OBJR 

Explain the pathway of systemic circulation

L.V→oxygenated blood→aorta→whole parts of body→veins→vena cava (superior and inferior) → R.A

OBJR

Explain the pathway of pulmonary circulation

R.A→deoxygenated blood→pulmonary artery→lungs→oxygen loading→pulmonary vein→L.A→(aorta)

Label the parts of pulmonary circulation

Label the parts of systemic circulation

Label the parts of the heart