where does fertilization the fusion of sperm and egg typically occur in the human body

ATI TEAS 7

TEAS 7 practice test science

1. Where does fertilization, the fusion of sperm and egg, typically occur in the human body?

A. Ovary
B. Uterus
C. Fallopian tube
D. Vagina

Correct answer: C

Rationale: Fertilization typically occurs in the fallopian tube. This is where the sperm and egg meet and fuse to form a zygote. The fallopian tube provides the optimal environment for fertilization as it helps in the transportation of the egg and provides a suitable site for fertilization before the resulting embryo travels to the uterus for implantation. Choices A, B, and D are incorrect. The ovary is where eggs are produced, the uterus is where the fertilized egg implants and develops into a fetus, and the vagina is the canal that leads to the cervix, but fertilization itself does not occur in these locations.

2. What is the function of the Vas Deferens?

A. Produces fluid to increase sperm mobility
B. Site where the egg matures
C. Helps control urine flow
D. Connects each testis to the urethra

Correct answer: D

Rationale: The vas deferens is a duct that connects each testis to the urethra, allowing the transport of sperm. Choice A is incorrect because the vas deferens does not produce fluid to increase sperm mobility. Choice B is incorrect as the vas deferens is not a site for egg maturation. Choice C is incorrect as the vas deferens does not help control urine flow, its primary role is in the transport of sperm.

3. Which of the following is NOT a major function of the respiratory system in humans?

A. It provides a large surface area for gas exchange of oxygen and carbon dioxide.
B. It helps regulate the blood's pH.
C. It helps cushion the heart against jarring motions.
D. It is responsible for vocalization.

Correct answer: C

Rationale: Option C, 'It helps cushion the heart against jarring motions,' is NOT a major function of the respiratory system in humans. The primary functions of the respiratory system include gas exchange, regulation of blood pH, and vocalization. The respiratory system does not play a role in cushioning the heart; that function is primarily carried out by the pericardium and other protective structures around the heart. Choices A, B, and D are major functions of the respiratory system in humans. Choice A refers to the respiratory system's role in gas exchange, Choice B highlights its involvement in regulating blood pH, and Choice D points out its responsibility for vocalization.

4. What is bile, where is it produced, where is it stored, and what is its function?

A. Produced in the pancreas, stored in the liver, aids in digestion
B. Produced in the liver, stored in the gallbladder, aids in fat digestion
C. Produced in the stomach, stored in the pancreas, neutralizes acid
D. Produced in the gallbladder, stored in the liver, breaks down proteins

Correct answer: B

Rationale: Bile is a digestive fluid produced in the liver, stored in the gallbladder, and it aids in the digestion of fats by emulsifying them. Emulsification helps to break down fats into smaller particles, facilitating their digestion by enzymes in the small intestine. Choice A is incorrect because bile is not produced in the pancreas, and it is not stored in the liver. Choice C is incorrect as bile is not produced in the stomach, and it does not neutralize acid. Choice D is also incorrect as bile is not produced in the gallbladder, and its primary function is not to break down proteins.

5. Which of the following is an example of a long bone in the human body?

A. Carpals
B. Femur
C. Tarsals
D. Metacarpals

Correct answer: B

Rationale: The correct answer is B, Femur. The femur is the longest and strongest bone in the human body, located in the thigh region. Long bones are characterized by their elongated shape, such as the femur, which provides support, strength, and mobility. Choices A, C, and D are incorrect because carpal bones (A) are short bones found in the wrist, tarsal bones (C) are short bones found in the ankle, and metacarpal bones (D) are classified as long bones, but they are shorter than the femur and mainly found in the hand.