Practice Science TEAS Test

Correct Answer: A

Rationale: The correct answer is A: Kidneys. The kidneys are responsible for filtering waste products, excess fluids, and toxins from the blood to form urine. Step-by-step rationale: 1. The kidneys contain millions of tiny filtering units called nephrons. 2. Blood flows through the nephrons, where waste products are removed and urine is formed. 3. The urine then flows through the ureters to the bladder for storage and eventual elimination. Other choices are incorrect because: B: Pancreas - produces digestive enzymes and regulates blood sugar, not primarily involved in waste filtration. C: Liver - detoxifies chemicals, produces bile, and stores nutrients, but not the primary organ for blood filtration. D: Heart - pumps blood and circulates it throughout the body, not directly involved in waste filtration.

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: Liver. The liver is responsible for producing bile, which helps in the digestion and absorption of fats. It is stored in the gallbladder (not produced by it), which releases it into the small intestine when needed. The pancreas produces digestive enzymes and insulin, not bile. The stomach produces gastric juices, not bile. In summary, the liver is the primary organ responsible for bile production, making it the correct choice.

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: C

Rationale: The correct answer is C: Sudoriferous. Sudoriferous glands are commonly known as sweat glands. These glands are responsible for producing sweat, which helps regulate body temperature. "Ceruminous" glands produce earwax, "Sebaceous" glands produce oil, and "Integumentary" refers to the skin as a whole, not specifically to sweat glands. Therefore, the correct choice is C.