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What is the primary function of insulin? To lower blood glucose by helping glucose enter cells—especially muscle and fat cells.
Which gland is known as the “master gland”? The pituitary gland, because it regulates many other endocrine glands
Why is the left ventricle thicker than the right? It pumps blood to the whole body, requiring more force
What is the main pacemaker of the heart? The SA node (sinoatrial node), which initiates the heartbeat.
Where does gas exchange occur in the respiratory system? In the alveoli of the lungs
: What is tidal volume? The amount of air inhaled or exhaled during normal breathing
What is the primary function of the small intestine? Nutrient absorption (carbs, fats, proteins, vitamins, minerals).
What enzyme begins chemical digestion of carbohydrates Amylase, found in saliva and pancreatic secretions
What is the main functional unit of the kidney? The nephron, which filters blood and forms urine.
What hormone increases water reabsorption in the kidneys? ADH (antidiuretic hormone), which prevents dehydration.
Created by: user-2006679
 

 



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