Practice Science TEAS Test

Correct Answer: B

Rationale: The correct answer is B: Luteinizing Hormone. The pituitary gland secretes luteinizing hormone, which plays a crucial role in the reproductive system by stimulating ovulation in females and testosterone production in males. Estrogen, progesterone, and testosterone are not directly released by the pituitary gland but are instead produced by other glands such as the ovaries, testes, and adrenal glands. Therefore, B is the correct choice as it is the hormone directly released by the pituitary gland.

Correct Answer: B

Rationale: The correct answer is B: Small intestine. The small intestine is primarily responsible for absorbing nutrients due to its large surface area and presence of specialized structures like villi and microvilli. These structures increase absorption efficiency. The stomach mainly breaks down food, the esophagus is a passage for food, and the large intestine primarily absorbs water and salts. Thus, the small intestine is the main site for nutrient absorption in the digestive system.

Correct Answer: D

Rationale: The correct answer is D: Thyroid. The thyroid gland produces hormones such as thyroxine and triiodothyronine, which play a crucial role in regulating metabolism. These hormones control the body's metabolic rate, affecting processes like energy production and consumption. The thymus (A) is responsible for immune function, the pituitary gland (B) regulates various hormones but not specifically metabolism, and the pancreas (C) produces insulin and glucagon to regulate blood sugar levels, not metabolism directly. In summary, the thyroid gland is the correct choice as it specifically regulates metabolism through thyroid hormones.

Correct Answer: B

Rationale: The correct answer is B: Sudoriferous gland. Sudoriferous glands, also known as sweat glands, are responsible for producing sweat to regulate body temperature. They are distributed throughout the skin and play a vital role in maintaining homeostasis. Sebaceous glands (A) produce sebum, hair follicles (C) are responsible for hair growth, and melanocytes (D) produce melanin for skin pigmentation. Therefore, B is the correct choice as it directly relates to sweat production in the skin.

Correct Answer: B

Rationale: The correct answer is B: Serotonin. Serotonin is associated with feelings of happiness and well-being because it helps regulate mood, emotions, and sleep. Low levels of serotonin have been linked to depression and anxiety. Dopamine (A) is associated with pleasure and reward, GABA (C) is an inhibitory neurotransmitter that helps reduce anxiety, and Acetylcholine (D) is involved in muscle movement and memory. Serotonin is the most relevant neurotransmitter for happiness and well-being due to its specific role in regulating mood and emotions.