IGCSE Unit 7 - Human nutrition

What type of teeth does label X represent

• Canine
• Incisor
• Molar 
• Premolar

Their function is to tear apart the food that we eat?

• X
• Y
• Z

Absorbed nutrients are highest in which blood vessel?

• Hepatic Vein
• Hepatic Portal Vein
• Hepatic Artery
• Gastrointestinal Vein

Answer explanation

This the only vein that does not transport blood back towards the heart. It connects the small intestine area to the liver (hepatic refers to the liver).

This essential nutrient helps repair skin and build muscle.

• Carbohydrates
• Protein
• Water
• Fat

Digestive enzyme that is found in the stomach and begins the digestion of proteins

• Bile

• Pepsin
• Maltase

• Amylase

Series of involuntary contractions along the walls of the digestive tract

• Peristalsis
• Epiglottis
• Pepsin
• Stomach

Muscular tube that connects the mouth to the stomach

• Epiglottis
• Peristalsis
• Stomach
• Oesophagus

Select those produced by the pancreas

• insulin

• amylase

• glucagon

• maltase

Answer explanation

Maltase is produced by the epithelium of the small intestine (ileum).

Main type of digestion that occurs in the stomach

• mechanical
• chemical
• amylase
• gallbladder

Answer explanation

Peristaltic contractions of the stomach wall help churn the food too which is mechanical.

Digestive enzyme found in saliva

• mechanical
• chemical
• amylase
• gallbladder