18. This blood type is called the "universal donor:
A) Type AB
B) Type B
C) Type O
D) Type A

19. The main organ in the respiratory system is the _____________.
A) Bronchi
B) Trachea
C) Diaphragm
D) Lung
20. In which structure is blood filtered within the kidneys?
A) bladder
B) ureter
C) nephron
D) gland
21. Water, urea, and other wastes are eliminated in a fluid called _____________.
A) carbon dioxide
B) urine
C) perspiration
D) protein
22. The _____________ makes urea and breaks down old red blood cells.
A) Kidneys
B) Pancreas
C) Liver
D) Urethra

23. Axon, cell body, and dendrites are parts of a _____________ cell.
A) Nerve
B) Prokaryotic
C) Epithelial
D) Cardiac

24. A nerve cell is also called a(n) _____________.
A) neuron
B) prokaryotic
C) cardiac
D) epithelial
25. The central nervous system includes:
A) Brain
B) Nerves
C) Spinal Cord
D) Brain & Spinal Cord
26. The peripheral nervous system includes :
A) Nerves
B) Spinal Cord
C) Brain
D) Brain & Spinal Cord
27. The part of the brain responsible for thinking and memory is the_____________
A) Medulla
B) Cerebrum
C) Cerebellum
D) Spinal Cord
28. The part of the brain responsible for involuntary actions such as breathing and heart beat is the _____________ casual informal wears for mother of the bride
A) Medulla
B) Cerebrum
C) Spinal Cord
D) Cerebellum
29. The endocrine gland that helps regulate blood glucose levels:
A) Thyroid
B) Pancreas
C) Adrenal
D) Pituitary
30. The endocrine gland helps control other glands and regulates blood pressure: and water balance
A) Thyroid
B) Pituitary
C) Adrenal
D) Pancreas
31. The endocrine organ controls changes in a male's body and regulates the production of sperm:
A) Testes
B) Adrenal
C) Thymus
D) Pituitary
32. The endocrine gland regulates hormones that control metabolism and energy-related reactions:
A) Thyroid
B) Pancreas
C) Adrenal
D) Pituitary
33. What is the term which describes the time an egg is released from an ovary?
A) Fertilization
B) Reproduction
C)