which is a function of the liver

ATI TEAS 7

Practice Science TEAS Test

1. What is the primary function of the liver related to digestion?

A. Produces bile
B. Stores bile
C. Converts waste ammonia into urea
D. Filters and detoxifies digestion byproducts

Correct answer: D

Rationale: The primary function of the liver related to digestion is to filter and detoxify byproducts of digestion, including toxins and metabolic waste products. While the liver does produce bile and convert waste ammonia into urea, these functions are not directly related to digestion. Storing bile is mainly done by the gallbladder, not the liver.

2. How many neutrons and electrons could a negative ion of sulfur have?

A. 16 neutrons, 16 electrons
B. 16 neutrons, 17 electrons
C. 17 neutrons, 16 electrons
D. 17 neutrons, 17 electrons

Correct answer: B

Rationale: A negative ion of sulfur would have 16 protons and 17 electrons since it gains one electron. The number of neutrons in an ion does not change, so the neutrons would remain at 16. Therefore, the correct answer is 16 neutrons and 17 electrons, which corresponds to choice B. Choice A is incorrect as it does not account for the extra electron gained by the negative ion. Choices C and D are incorrect because they propose a change in the number of neutrons, which is not affected by the ionization process.

3. What is the role of the spleen in the body?

A. To produce bile
B. To filter blood and remove old red blood cells
C. To produce red blood cells
D. To store fat

Correct answer: B

Rationale: The correct answer is B. The spleen acts as a blood filter, removing old or damaged red blood cells. It also plays a role in immune responses, storing blood reserves, and helping to fight infection. The production of bile is primarily associated with the liver, not the spleen. While the bone marrow is responsible for red blood cell production, the spleen's main functions do not include this process. Storing fat is not a primary function of the spleen.

4. Which of the following lists of joint types is in the correct order for increasing amounts of permitted motion (least mobile to most mobile)?

A. Hinge, condyloid, saddle
B. Saddle, hinge, condyloid
C. Saddle, condyloid, hinge
D. Hinge, saddle, condyloid

Correct answer: A

Rationale: The correct order of joint types, from least mobile to most mobile, is hinge, condyloid, saddle. A hinge joint allows movement in one plane (like a door hinge), a condyloid joint allows movement in two planes but not rotation (like the wrist), and a saddle joint allows movement in multiple directions (like the thumb). Choice A, 'Hinge, condyloid, saddle,' is the correct sequence as it accurately represents the order of increasing permitted motion in joints. Choices B, C, and D are incorrect because they do not follow the correct order of joint types from least mobile to most mobile as required by the question.

5. Which term refers to the measure of the mass of a substance per unit volume and is commonly expressed in kilograms per cubic meter?

A. Mass
B. Weight
C. Density
D. Volume

Correct answer: C

Rationale: Density is the measure of the mass of a substance per unit volume and is commonly expressed in kilograms per cubic meter. Mass refers to the amount of matter in an object, weight is the force of gravity acting on an object, and volume is the amount of space an object occupies. In this context, density is the correct term for expressing the measure of mass per unit volume, making it the most appropriate choice among the options provided.