Biology ( TRANSPORT IN ANIMALS ) ghazal al-hayek.

Which blood vessel contains valves ?

• arteriole

• capillary

• renal artery

• renal vein

Which chamber of the heart has the thickest muscle wall ?

• left atrium

• left ventricle

• right atrium

• right ventricle

Which substances are dissolved in the human blood plasma ?

• carbon dioxide , haemoglobin & glucose .

• carbon dioxide , oxygen & haemoglobin .

• glucose , hormones & urea .

• oxygen ,urea & starch .

Which blood vessel has a high carbon dioxide concentration, a low oxygen concentration and a high blood pressure ?

• aorta

• pulmonary artery

• pulmonary vein

• vena cava

Which statement is correct for most of the veins in the humans body ?

• They carry blood at high pressure

• They have a pulse

• They have valves

• They take blood away from the heart

Which substance is transported by haemoglobin ?

• Nitrogen

• oxygen

• urea

• water

Where does haemoglobin become oxyhaemoglobin ?

• heart

• kidneys

• liver

• lungs

In a person with a low platelet level , Which process is slower than normal ?

• Antibody formation

• Blood clotting

• oxygen carriage

• phagocytosis

When the blood is flowing through the vena cava , Which is the main blood vessel will it flow through next ?

• Hepatic portal vein

• Hepatic vein

• Pulmonary artery

• Pulmonary vein