Nutrition in Humans - True/False

Human nutrition consists of ingestion, digestion, absorption, assimilation and egestion.

• True

• False

Answer explanation

Nutrition process:

Ingestion --> digestion --> Absorption --> Assimilation --> Egestion

Chewing is an example of chemical digestion.

• True

• False

Answer explanation

Chewing is an example of physical digestion.

Protein digestion is completed at the stomach.

• True

• False

Answer explanation

Protein digestion is completed at the small intestine.

Digested food substances, such as glucose, amino acids, fatty acids and glycerol, are absorbed in the small intestine.

• True

• False

Answer explanation

Digested food substances are absorbed in the small intestine.

Glucose and amino acids are absorbed into the bloodstream.

Fatty acids and glycerol, are absorbed into the lacteal (form back into fats in the lacteal).

The hepatic portal vein transports the digested food substances from the small intestine to the liver.

• True

• False

Answer explanation

The hepatic portal vein transports BLOOD containing digested food substances from the small intestine to the liver.

Deamination of excess amino acids occur at the small intestine.

• True

• False

Answer explanation

Deamination of excess amino acids occur at the LIVER.

Amino acids are deaminated to form urea.

The hormone insulin converts excess glucose into glycogen for storage in the human body.

• True

• False

Answer explanation

Insulin is secreted when blood glucose level is higher than normal.

It triggers the liver and muscle cells to convert excess glucose into glycogen.

Diabetes mellitus is a disease which leads to liver hardening.

• True

• False

Answer explanation

Diabetes mellitus is a disease in which the body does not produce sufficient insulin to convert excess glucose into glycogen for storage.