CSS - PMS - CCE - PCS - General Science
Organs
Where do sperm mature and become motile after leaving the testes?
A. Epididymis
B. Prostate
C. Urethra
D. Seminal vesicle
Correct Answer: A
Sperm mature and are stored in the epididymis.
CSS - PMS - CCE - PCS - General Science
Organs
Which male organ contributes fluid to semen and lies below the bladder?
A. Prostate gland
B. Thyroid gland
C. Adrenal gland
D. Pituitary gland
Correct Answer: A
The prostate lies below the bladder and contributes secretions to semen.
CSS - PMS - CCE - PCS - General Science
Organs
Fertilization usually occurs in which organ?
A. Uterus
B. Fallopian tube
C. Ovary
D. Cervix
Correct Answer: B
Fertilization most commonly occurs in the ampullary region of the fallopian tube.
CSS - PMS - CCE - PCS - General Science
Organs
In which organ does a fetus normally develop?
A. Ovary
B. Uterus
C. Cervix
D. Vagina
Correct Answer: B
The uterus supports implantation and fetal development.
CSS - PMS - CCE - PCS - General Science
Organs
Which female reproductive organs produce ova and estrogen?
A. Uterus
B. Ovaries
C. Cervix
D. Fallopian tubes
Correct Answer: B
The ovaries produce ova and secrete hormones including estrogen and progesterone.
CSS - PMS - CCE - PCS - General Science
Organs
Which male reproductive organs produce sperm and testosterone?
A. Prostate glands
B. Testes
C. Seminal vesicles
D. Epididymides
Correct Answer: B
The testes produce sperm and secrete testosterone.
CSS - PMS - CCE - PCS - General Science
Organs
Where is urine initially collected after formation within the kidney?
A. Renal pelvis
B. Urethra
C. Bladder
D. Prostate
Correct Answer: A
Urine drains through calyces into the renal pelvis before entering the ureter.
CSS - PMS - CCE - PCS - General Science
Organs
Which organ activates vitamin D to its hormonally active form?
A. Kidney
B. Spleen
C. Stomach
D. Gallbladder
Correct Answer: A
The kidney converts vitamin D to calcitriol, its active hormonal form.
CSS - PMS - CCE - PCS - General Science
Organs
Which kidney-produced hormone stimulates red blood cell production?
A. Insulin
B. Erythropoietin
C. Thyroxine
D. Aldosterone
Correct Answer: B
The kidneys produce erythropoietin, which stimulates red blood cell production in bone marrow.
CSS - PMS - CCE - PCS - General Science
Organs
Which organ helps regulate acid-base balance by excreting hydrogen ions and conserving bicarbonate?
A. Kidneys
B. Spleen
C. Gallbladder
D. Skin only
Correct Answer: A
The kidneys play a major role in long-term regulation of acid-base balance.
CSS - PMS - CCE - PCS - General Science
Organs
Which tube carries urine from the bladder to the outside of the body?
A. Ureter
B. Urethra
C. Renal artery
D. Vas deferens
Correct Answer: B
The urethra conducts urine from the bladder to the exterior.
CSS - PMS - CCE - PCS - General Science
Organs
Which tubes carry urine from the kidneys to the bladder?
A. Urethra
B. Ureters
C. Bronchi
D. Bile ducts
Correct Answer: B
The ureters transport urine from each kidney to the urinary bladder.
CSS - PMS - CCE - PCS - General Science
Organs
Which blood vessels carry blood to the kidneys?
A. Renal arteries
B. Renal veins
C. Pulmonary arteries
D. Hepatic veins
Correct Answer: A
Renal arteries deliver blood from the abdominal aorta to the kidneys.
CSS - PMS - CCE - PCS - General Science
Organs
What is the functional unit of the kidney?
A. Neuron
B. Nephron
C. Alveolus
D. Hepatocyte
Correct Answer: B
The nephron is the microscopic functional unit responsible for filtration and urine formation.
CSS - PMS - CCE - PCS - General Science
Organs
Which gland is important in T-lymphocyte maturation, especially in childhood?
A. Thymus
B. Thyroid
C. Adrenal
D. Pituitary
Correct Answer: A
The thymus is important for maturation of T lymphocytes and is more prominent in children.
CSS - PMS - CCE - PCS - General Science
Organs
Which gland helps regulate calcium levels through parathyroid hormone?
A. Parathyroid glands
B. Pineal gland
C. Thymus
D. Pancreas
Correct Answer: A
Parathyroid hormone is a major regulator of blood calcium.
CSS - PMS - CCE - PCS - General Science
Organs
Which part of the adrenal gland secretes adrenaline?
A. Adrenal cortex
B. Adrenal medulla
C. Renal medulla
D. Pituitary
Correct Answer: B
The adrenal medulla releases catecholamines such as adrenaline.
CSS - PMS - CCE - PCS - General Science
Organs
Which hormone-producing glands are located on top of the kidneys?
A. Pituitary glands
B. Adrenal glands
C. Parathyroid glands
D. Salivary glands
Correct Answer: B
Each adrenal gland sits superior to a kidney.
CSS - PMS - CCE - PCS - General Science
Organs
Which gland is located in the neck and produces thyroid hormones?
A. Adrenal gland
B. Thyroid gland
C. Pituitary gland
D. Pineal gland
Correct Answer: B
The thyroid gland lies in the anterior neck and produces T3 and T4.
CSS - PMS - CCE - PCS - General Science
Organs
Which pancreatic hormone raises blood glucose?
A. Insulin
B. Glucagon
C. Calcitonin
D. Melatonin
Correct Answer: B
Glucagon promotes glucose release into the blood.