CSS - PMS - CCE - PCS - General Science
Organs
Which gland in the brain secretes melatonin?
A. Pituitary gland
B. Pineal gland
C. Thyroid gland
D. Thymus
Correct Answer: B
The pineal gland secretes melatonin and helps regulate circadian rhythms.
CSS - PMS - CCE - PCS - General Science
Organs
Which gland is located at the base of the brain and is often called the master gland?
A. Thyroid
B. Pituitary
C. Adrenal
D. Pineal
Correct Answer: B
The pituitary regulates several endocrine glands through its hormones.
CSS - PMS - CCE - PCS - General Science
Organs
Which brain structure helps regulate body temperature, hunger and thirst?
A. Hypothalamus
B. Cerebellum
C. Corpus callosum
D. Occipital lobe
Correct Answer: A
The hypothalamus is a major homeostatic control center.
CSS - PMS - CCE - PCS - General Science
Organs
Which part of the brain controls vital functions such as breathing and heart rate?
A. Cerebellum
B. Medulla oblongata
C. Frontal lobe
D. Parietal lobe
Correct Answer: B
The medulla oblongata contains centers that help regulate breathing, heart rate and blood pressure.
CSS - PMS - CCE - PCS - General Science
Organs
Which part of the brain coordinates balance and fine movements?
A. Cerebrum
B. Cerebellum
C. Hypothalamus
D. Medulla
Correct Answer: B
The cerebellum coordinates posture, balance and fine motor activity.
CSS - PMS - CCE - PCS - General Science
Organs
Which part of the brain is mainly responsible for thinking, memory and voluntary actions?
A. Cerebrum
B. Cerebellum
C. Medulla oblongata
D. Pons
Correct Answer: A
The cerebrum is responsible for higher mental functions, memory, sensation and voluntary movement.
CSS - PMS - CCE - PCS - General Science
Organs
Which organ contains the vocal cords?
A. Pharynx
B. Larynx
C. Trachea
D. Esophagus
Correct Answer: B
The larynx, or voice box, contains the vocal cords.
CSS - PMS - CCE - PCS - General Science
Organs
Which organ prevents food from entering the airway during swallowing?
A. Epiglottis
B. Pancreas
C. Spleen
D. Thymus
Correct Answer: A
The epiglottis helps cover the laryngeal inlet during swallowing.
CSS - PMS - CCE - PCS - General Science
Organs
Which organ connects the throat to the stomach?
A. Trachea
B. Esophagus
C. Bronchus
D. Ureter
Correct Answer: B
The esophagus is the muscular tube that carries food from the pharynx to the stomach.
CSS - PMS - CCE - PCS - General Science
Organs
Most water absorption from remaining intestinal contents occurs in which organ?
A. Stomach
B. Large intestine
C. Esophagus
D. Gallbladder
Correct Answer: B
The large intestine absorbs water and electrolytes from intestinal contents.
CSS - PMS - CCE - PCS - General Science
Organs
Most nutrient absorption occurs in which organ?
A. Stomach
B. Small intestine
C. Large intestine
D. Esophagus
Correct Answer: B
Most digestion and nutrient absorption occur in the small intestine.
CSS - PMS - CCE - PCS - General Science
Organs
Which organ is mainly responsible for digestion of food by acid and enzymes?
A. Stomach
B. Liver
C. Colon
D. Spleen
Correct Answer: A
The stomach secretes acid and digestive enzymes and mechanically mixes food.
CSS - PMS - CCE - PCS - General Science
Organs
Which organ stores urine before it is excreted?
A. Kidney
B. Urinary bladder
C. Ureter
D. Urethra
Correct Answer: B
The urinary bladder temporarily stores urine before urination.
CSS - PMS - CCE - PCS - General Science
Organs
Which organ produces bile?
A. Gallbladder
B. Liver
C. Pancreas
D. Small intestine
Correct Answer: B
The liver produces bile, which helps digest and absorb fats.
CSS - PMS - CCE - PCS - General Science
Organs
Which organ stores bile?
A. Liver
B. Gallbladder
C. Pancreas
D. Stomach
Correct Answer: B
Bile is produced by the liver and stored and concentrated in the gallbladder.
CSS - PMS - CCE - PCS - General Science
Organs
Which organs filter blood and produce urine?
A. Lungs
B. Kidneys
C. Adrenal glands
D. Thyroid glands
Correct Answer: B
The kidneys filter blood, remove wastes, regulate fluid balance, and produce urine.
CSS - PMS - CCE - PCS - General Science
Organs
Which organ is primarily responsible for gas exchange?
A. Kidney
B. Lungs
C. Pancreas
D. Spleen
Correct Answer: B
Gas exchange of oxygen and carbon dioxide occurs mainly in the alveoli of the lungs.
CSS - PMS - CCE - PCS - General Science
Organs
Which organ pumps blood throughout the body?
A. Liver
B. Heart
C. Lung
D. Spleen
Correct Answer: B
The heart pumps blood through the circulatory system.
CSS - PMS - CCE - PCS - General Science
Organs
Which is the largest internal organ in the human body?
A. Brain
B. Liver
C. Lung
D. Kidney
Correct Answer: B
The liver is the largest internal solid organ in the human body.
CSS - PMS - CCE - PCS - General Science
Organs
Which is the largest organ of the human body?
A. Liver
B. Skin
C. Lung
D. Brain
Correct Answer: B
The skin is the body's largest organ and forms the main protective barrier.