Explanation

• The majority of nutrient absorption in the digestive system occurs in the small intestine,
• Where the final stages of digestion take place.
• This organ's structure, featuring villi and microvilli, creates a large surface area optimized for absorbing digested nutrients and most water into the bloodstream.

Last verified on 08-11-2026

Explanation

• The pulmonary artery carries deoxygenated blood from the right ventricle of the heart to the lungs.
• In the lungs, blood releases carbon dioxide and absorbs oxygen.
• The pulmonary veins carry oxygenated blood from the lungs back to the left atrium of the heart.

Last verified on 07-11-2026

Explanation

• The cerebellum controls body posture, balance, and coordination.
• It helps muscles work smoothly during movement.
• It ensures the body stays balanced while standing or walking.
• It coordinates voluntary muscle actions.
• Damage to it causes loss of balance and shaky movements.

Last verified on 21-06-2026

Explanation

• The kidney is an important organ responsible for filtering blood and forming urine.
• Its structural and functional unit is the nephron.
• Each kidney contains millions of nephrons.
• They perform filtration, reabsorption, and secretion.

Last verified on 23-04-2026

Explanation

• Total Vertebrae: 33
• Cervical Vertebrae: 7
• Thoracic Vertebrae: 12
• Lumbar Vertebrae: 5
• Sacral Vertebrae: 5 (fused) and Coccygeal Vertebrae: 4 (fused)

Additional information:

• Total bones in an adult: 206
• Bones in a newborn: About 300
• Longest bone: Femur
• Shortest bone: Stapes
• Bones in the skull: 22
• Bones in one hand: 27

Last verified on 21-07-2026