TEAS Practice Test Science

Correct Answer: B

Rationale: The correct answer is B: Liver. The liver produces bile, a greenish-yellow fluid that aids in digestion by breaking down fats. The pancreas (choice A) produces digestive enzymes, not bile. The gallbladder (choice C) stores and concentrates bile produced by the liver, but it does not produce bile itself. The stomach (choice D) produces gastric juices to break down food, but it does not produce bile. Therefore, the liver is the organ responsible for producing bile to aid in digestion.

Correct Answer: B

Rationale: The correct answer is B: Liver. The liver produces bile, a greenish-yellow fluid that aids in digestion by breaking down fats. The pancreas (choice A) produces digestive enzymes, not bile. The gallbladder (choice C) stores and concentrates bile produced by the liver, but it does not produce bile itself. The stomach (choice D) produces gastric juices to break down food, but it does not produce bile. Therefore, the liver is the organ responsible for producing bile to aid in digestion.

Correct Answer: D

Rationale: The correct answer is D because all of the statements are accurate regarding the microscopic anatomy of heart muscle. A: Cardiac muscle is indeed striated, short, fat, branched, and interconnected. B: Intercalated discs do anchor cardiac cells together and facilitate ion passage. C: The connective tissue endomysium serves as a support structure similar to tendons. Therefore, D is correct as all statements are true about the microscopic anatomy of heart muscle.

Correct Answer: D

Rationale: Rationale: 1. Choice A is correct as the left ventricle pumps oxygen-rich blood into the aorta. 2. Choice B is correct as the right ventricle pumps deoxygenated blood into the pulmonary trunk. 3. Choice C is correct as ventricles are indeed the main pumping chambers of the heart. 4. Therefore, choice D, "All of the above," is correct as it encompasses all true statements about the ventricles. Other choices are incorrect as they do not cover all accurate statements.

Correct Answer: B

Rationale: The correct answer is B: To produce bile. The liver produces bile, which is essential for the digestion and absorption of fats in the small intestine. Bile helps emulsify fats, breaking them down into smaller droplets for easier digestion. A: To absorb water - This is not the primary function of the liver. Water absorption primarily occurs in the intestines. C: To store glucose - While the liver does store glucose in the form of glycogen, its primary function is not to store glucose. D: To regulate metabolism - While the liver does play a role in metabolism, its primary function in the digestive system is to produce bile.