Which organ system does not excrete waste?
The cardiovascular system
The respiratory system
The digestive system
The integumentary system
The urinary system
The Correct Answer is A
A. The cardiovascular system is primarily involved in transporting blood and nutrients but does not directly excrete waste.
B. The respiratory system: The respiratory system helps excrete carbon dioxide, a waste product of metabolism.
C. The digestive system excretes waste through the process of defecation.
D. The integumentary system (skin) excretes waste through sweat.
E. The urinary system is directly involved in the excretion of waste products through urine.
Free Nursing Test Bank
- Free Pharmacology Quiz 1
- Free Medical-Surgical Quiz 2
- Free Fundamentals Quiz 3
- Free Maternal-Newborn Quiz 4
- Free Anatomy and Physiology Quiz 5
- Free Obstetrics and Pediatrics Quiz 6
- Free Fluid and Electrolytes Quiz 7
- Free Community Health Quiz 8
- Free Promoting Health across the Lifespan Quiz 9
- Free Multidimensional Care Quiz 10
View Related questions
Correct Answer is B
Explanation
A. the embryo; part of the placenta. The embryoblast (inner cell mass) will become the embryo, but the trophoblast will become part of the placenta, not the embryo.
B. part of the placenta; the embryo. The trophoblast forms part of the placenta and helps in its development, while the embryoblast (inner cell mass) will develop into the embryo.
C. part of the placenta; the yolk sac. While the trophoblast does contribute to the formation of the placenta, the embryoblast (inner cell mass) develops into the embryo, not the yolk sac. The yolk sac is derived from extraembryonic mesoderm and endoderm, not the inner cell mass directly.
D. the embryo; the yolk sac. The embryoblast (inner cell mass) develops into the embryo, but the trophoblast does not become the yolk sac. The yolk sac is formed from structures surrounding the embryo, not from the trophoblast itself.
Correct Answer is B
Explanation
A. 20,000 to 30,000: This number is too high for the typical number of sperm that reach the vicinity of the egg.
B. 20 to 200: This number is within the range of the actual number of sperm that typically reach the vicinity of the egg.
C. Half: This is an exaggerated number, as far fewer than half of the ejaculated sperm reach the vicinity of the egg.
D. 2000 to 3000: This number is too high for the typical number of sperm that reach the vicinity of the egg.