a neuron consists of three main parts these are

ATI TEAS 7

ATI TEAS Science Test

1. Which of the following represents the three main parts of a neuron?

A. effector, cell body, axon
B. dendrites, axon, cell body
C. dendrites, axon, receptor
D. synapse, axon, cell body

Correct answer: B

Rationale: A neuron consists of three main parts: dendrites, axon, and cell body. Dendrites receive signals from other neurons or sensory receptors. The cell body (soma) contains the nucleus and organelles essential for neuron function. The axon transmits electrical impulses away from the cell body to other neurons, muscles, or glands. Choice A is incorrect because an effector is not a part of a neuron. Choice C is incorrect because a receptor is not a component of a neuron but rather interacts with neurons. Choice D is incorrect because the synapse is a junction between neurons for signal transmission, not a structural part of a neuron.

2. What is the name for the sac-shaped structures in which carbon dioxide and oxygen exchange takes place?

A. Kidneys
B. Medulla oblongata
C. Alveoli
D. Bronchioles

Correct answer: C

Rationale: The alveoli are the tiny sac-shaped structures in the lungs where gas exchange occurs. Oxygen from the air we breathe diffuses into the bloodstream through the alveoli, while carbon dioxide, a waste product produced by cells, is removed from the blood and exhaled out of the body through the alveoli. Choices A, B, and D are incorrect. Kidneys are organs responsible for filtering waste from the blood, the medulla oblongata is a part of the brain responsible for autonomic functions, and bronchioles are smaller airway passages in the lungs that branch off from the bronchi.

3. When studying vocabulary, a student notices that the words circumference, circumnavigate, and circumstance all begin with the prefix circum-. The student uses their knowledge of affixes to infer that all of these words share what related meaning?

A. Around, surrounding
B. Travel, transport
C. Size, measurement
D. Area, location

Correct answer: A

Rationale: The prefix circum- means 'around' or 'surrounding.' In words like circumference (the distance around a circle), circumnavigate (to travel around something), and circumstance (the conditions surrounding an event), the prefix implies the idea of being around or encompassing. Choices B, C, and D are incorrect because the words do not primarily relate to travel, size, or area; instead, they share the common theme of being around or surrounding something.

4. Which of the following statements contains colloquialisms?

A. If you don't mind, could we meet later?
B. I thoroughly enjoyed your class.
C. Let's hang out later. I need to chill after that exam.
D. It's a pleasure to meet you. Your class inspired me in many ways.

Correct answer: C

Rationale: The correct answer is C because 'hang out' and 'chill' are colloquialisms, informal expressions commonly used in casual conversations. Choice A is a polite and formal way to ask for a meeting, devoid of colloquial language. Choice B is a straightforward expression of enjoyment without any colloquialisms. Choice D is a polite and formal statement that does not contain any colloquial language.

5. Anna is planning a trip to Bretagne, or Brittany, in the northwestern part of France. Since she knows very little about it, she is hoping to find information about hiking trails, beaches, restaurants, and accommodations. Which of the following guides will be the best for her to review?

A. The Top Ten Places to Visit in Brittany, published by a non-profit organization in Bretagne aiming to attract tourism to the region
B. Getting to Know Nantes: Eating, Staying, and Sightseeing in Brittany's Largest City, published by the French Ministry of Tourism
C. Hiking Through Bretagne: The Best Trails for Discovering Northwestern France, published by a company specializing in travel for those wanting to experience the outdoors
D. The Complete Guide to Brittany, published by a travel book company that provides guides for travel throughout Europe

Correct answer: C

Rationale: The best guide for Anna to review would be 'Hiking Through Bretagne: The Best Trails for Discovering Northwestern France,' published by a company specializing in travel for those wanting to experience the outdoors. Since Anna is interested in hiking and outdoor activities, a guide that focuses on outdoor trails in Northwestern France would be the most suitable choice. Choice A, 'The Top Ten Places to Visit in Brittany,' may not provide detailed information about hiking trails. Choice B, 'Getting to Know Nantes,' focuses on a specific city and may not cover the broader region of Bretagne. Choice D, 'The Complete Guide to Brittany,' although comprehensive, may not emphasize hiking trails and outdoor experiences as much as choice C.