life processes

Name the layer that protects the stomach cells from acid

• Villi

• Pepsin

• Gastric lining

• Mucus

First enzyme that gets mixed with food is

• Lipase

• Trypsin

• Pepsin

• Salivary amylase

Bile juice is released by

• Liver

• Small intestine

• Large intestine

• Stomach

Oxygen binds to which pigment in RBC

• Chlorophyll

• Haemoglobin

• Leucocytes

• None

Humans have how many chambers in heart

• 4

• 2

• 3

• 1

What prevents the back flow of blood in heart chambers

• Septum

• Thick wall

• Valves

• Blood pressure

Left side of heart has

• Oxygenated blood

• Deoxygenated blood

Which one is one cell thick blood vessel

• Capillaries

• Artery

• Veins

Name the fluid part of blood

• Water

• RBC

• Plasma

• Platelets

Name the vessel carrying deoxygenated blood from body parts to heart

• Aorta

• Pulmonary vein

• Pulmonary artery

• Venacava