Explanation

• The stomach produces Hydrochloric Acid (HCl) as part of gastric juice.
• HCl creates a highly acidic environment with a pH of about 1.5–3.5.
• It activates pepsinogen into pepsin.
• Pepsin helps break down proteins into smaller peptides.

Last verified on 03-09-2026

Explanation

• The normal number of ribs in a human body is 24 (12 pairs).

Additional information:

• Upper ribs: True ribs (1–7 pairs)
• Lower ribs: False ribs (8–12 pairs)
• Floating ribs: Last 2 pairs (11–12)

Last verified on 24-06-2026

Explanation

• Adrenal gland → Endocrine gland, not a digestive gland.
• Liver → Digestive gland; produces bile.
• Pancreas → Digestive gland; produces digestive enzymes.

Last verified on 03-09-2026

Explanation

• Smallest muscle: Stapedius.
• Location: Middle ear.
• Associated bone: Stapes.
• Function: Helps dampen excessive sound vibrations.
• Longest muscle: Sartorius.

Last verified on 03-09-2026

Explanation

• The ovum (egg cell) is generally considered the largest cell in the human body.
• It is the female reproductive cell and can be seen with the naked eye as a tiny dot.
• The ovum is approximately 0.1 mm (100 micrometers) in diameter.
• In contrast, the sperm cell is one of the smallest human cells.

Last verified on 03-09-2026