what is correct about the hormones that stimulate male and female organs to produce male and female sex hormones

ATI TEAS 7

ATI TEAS Science Test

1. What is correct about the hormones that stimulate male and female organs to produce male and female sex hormones?

A. Female organs are stimulated by female hormones and male organs by male hormones.
B. The same hormones that produce male or female sex characteristics stimulate the organs.
C. The same hormones stimulate both male and female organs to produce sex hormones.
D. The hypothalamus stimulates the pituitary gland's secretion of male and female hormones.

Correct answer: C

Rationale: The correct answer is C. The same hormones stimulate both male and female organs to produce sex hormones. Hormones such as luteinizing hormone (LH) and follicle-stimulating hormone (FSH) are produced by the pituitary gland and act on the ovaries in females and the testes in males to stimulate the production of sex hormones (estrogen and progesterone in females, testosterone in males). Therefore, the same hormones stimulate both male and female organs to produce sex hormones. Choices A, B, and D are incorrect because they do not accurately describe the relationship between hormones and the stimulation of male and female organs to produce sex hormones.

2. Which type of muscle is characterized by involuntary contractions, is striated, and is primarily found in the heart?

A. Skeletal muscle
B. Smooth muscle
C. Cardiac muscle
D. Elastic muscle

Correct answer: C

Rationale: The correct answer is C, Cardiac muscle. Cardiac muscle fits the description provided in the question as it exhibits involuntary contractions, striations, and is predominantly located in the heart. Skeletal muscle, while also striated, is voluntary and not involuntary like cardiac muscle. Smooth muscle lacks striations and is typically found in the walls of internal organs. Elastic muscle is not a recognized type of muscle tissue in human anatomy, making it an incorrect choice.

3. Which of the following is a special property of water?

A. Water does not easily flow through phospholipid bilayers.
B. A water molecule's oxygen atom does not allow fish to breathe.
C. Water is highly cohesive, which explains its high melting point.
D. Water cannot self-hydrolyze and decompose into hydrogen and oxygen.

Correct answer: C

Rationale: Water is highly cohesive, meaning it is attracted to itself due to its hydrogen bonding properties. This cohesion is the reason why water has a high melting point compared to other liquids of similar molecular weight. It is crucial for the existence of life on Earth as it allows water to remain a liquid within a wide range of temperatures, providing a stable environment for biological processes to occur. Choices A, B, and D are incorrect. Water's cohesive property does not directly relate to its ability to flow through phospholipid bilayers, assist fish in breathing, or self-hydrolyze into hydrogen and oxygen.

4. If a patient had a heart attack and tissue in the left ventricle lost blood flow, what would you most expect to happen?

A. Blood would not flow from the lungs.
B. Blood would back up in the legs.
C. Blood would not be pumped to the body.
D. Blood would not be oxygenated.

Correct answer: C

Rationale: The correct answer is C: 'Blood would not be pumped to the body.' When tissue in the left ventricle loses blood flow due to a heart attack, the ability of the left ventricle to pump oxygenated blood to the body is compromised. This can lead to serious consequences for the patient's overall health and organ function. Choices A, B, and D are incorrect because a heart attack affecting the left ventricle does not directly impact blood flow from the lungs, cause blood to back up in the legs, or prevent blood from being oxygenated. The primary concern is the compromised ability of the left ventricle to pump blood to the rest of the body, affecting overall circulation and organ perfusion.

5. Which hormone is responsible for regulating blood sugar levels?

A. Thyroxine
B. Insulin
C. Adrenaline
D. Cortisol

Correct answer: B

Rationale: The correct answer is B: Insulin. Insulin, produced by the pancreas, plays a crucial role in regulating blood sugar levels by facilitating glucose uptake into cells. Thyroxine, adrenaline, and cortisol do not directly regulate blood sugar levels. Thyroxine is produced by the thyroid gland and regulates metabolism. Adrenaline and cortisol are hormones involved in stress responses and do not have a primary function in blood sugar regulation. Understanding the functions of these hormones is crucial in differentiating their roles in the body and identifying the specific hormone responsible for blood sugar regulation.