Which structure of the nervous system carries action potential in the direction of a synapse?

A. Cell body

B. Axon

C. Neuron

D. Myelin

Answer Explanation:

Axons carry action potential in the direction of synapses. Axons are the long, fiber-like structures that carry information from neurons. Electrical impulses travel along the body of the axons, some of which are up to a foot long.

A neuron is a type of cell that is responsible for sending information throughout the body. There are several types of neurons, including muscle neurons, which respond to instructions for movement; sensory neurons, which transmit information about the external world; and interneurons, which relay messages between neurons. Myelin is a fat that coats the nerves and ensures the accurate transmission of information in the nervous system.

Therefore, the Correct Answer is B.

Q #1: Where is the gastrocnemius vein in relation to the femoral vein?

A. Lateral

B. Distal

C. Superior

D. Ventral

Answer Explanation

The gastrocnemius vein is found in the calf. The femoral vein is found in the proximal anterior thighs/pelvis.

Since the gastrocnemius vein is found below the femoral vein it is distal or inferior to the femoral vessel.
Q #2: A doctor needs to convince his boss to approve a test for a patient. Which statement below best communicates a scientific argument that justifies the need for the test?

A. The patient looks like he needs this test.

B. The doctor feels that the patient needs this test.

C. The patient's symptoms and health history suggest that this test will enable the correct diagnosis to help the patient.

D. The patient has excellent insurance that will pay for several tests, and the doctor would like to run as many tests as possible.

Answer Explanation

A scientific argument should be based on measurable and observable facts such as the patient's current symptoms and health history. Discussing the patient's appearance or the doctor's feelings does not communicate a scientific argument. While insurance may be a factor in most healthcare systems, the status of the patient's Insurance does not communicate a scientific argument that justifies the need for the test
Q #3: Which of the below is the best definition for the term circulation?

A. The transport of oxygen and other nutrients to the tissues via the cardiovascular system

B. The force exerted by blood against a unit area of the blood vessel walls

C. The branching air passageways inside the lungs

D. The process of breathing in

Answer Explanation

Circulation is transporting oxygen and other nutrients to the tissues via the cardiovascular system. Choice B refers to blood pressure. Bronchi are the branching airways inside the lungs, while inhalation refers to the process of breathing in.
Q #4: Which is NOT a major type of carbohydrate?

A. Monosaccharides

B. Disaccharides

C. Pentasaccharides

D. Polysaccharides

Answer Explanation

There are four major types of carbohydrates: monosaccharides, disaccharides, oligosaccharides, and polysaccharides. Monosaccharides (mono- means one) are made up of one sugar molecule, while disaccharides (di- means two) are made up of two sugar molecules. Oligosaccharides (oligo- means few) are usually less than a dozen sugar molecules, while polysaccharides (poly-means many) are usually more than a dozen sugar molecules.

Pentasaccharides are not a type of carbohydrate.
Q #5: What is a hypothetical explanation for an occurrence that is based on prior knowledge called?

A. Independent variable

B. Dependent variable

C. Trial

D. Hypothesis

Answer Explanation

A hypothesis is the use of prior knowledge in order to provide a hypothetical explanation for why something may or may not occur. A hypothesis can be proved wrong or right based on the results of the experiment and repeated trials.
Q #6: Which of these body parts does NOT produce melanin?

A. Hair

B. Nails

C. Skin

D. Iris

Answer Explanation

While melanin can be found in nails, it is not produced there. Melanin is the pigment that provides color to skin, hair, and eyes. Although the specific coloring of one's skin, hair, and eyes are genetically determined. environmental factors such as sun exposure can increase melanin production in the skin to help protect it from damage.
Q #7: A patient lying flat on their back is in which of the following positions?

A. Prone

B. Supine

C. Lateral

D. Medial

Answer Explanation
Q #8: Which of the following are formed when the plasma membrane surrounds a particle outside of the cell?

A. Golgi bodies

B. Rough endoplasmic reticulum

C. Secretory vesicles

D. Endocytic vesicles

Answer Explanation

Endocytosis is a process by which cells absorb larger molecules or even tiny organisms, such as bacteria, that would not be able to pass through the plasma membrane. Endocytic vesicles containing molecules from the extracellular environment often undergo further processing once they enter the cell.
Q #9: Which of the following statements concerning the states of matter is NOT true?

A. Plasmas are high-temperature collections of ions and free electrons.

B. Solids are the least compressible due to the more rigid positions of the particles.

C. Gases have no definite volume and expand to fill their containers

D. Liquids have no definite shape and no definite volume.

Answer Explanation

Liquids have no definite shape, but they do have a definite volume. While the particles of liquids move more freely than those in solids, they do maintain a definite volume.
Q #10: Your class is competing with another class to determine who has the best plant color. Your class decides to test a couple of solutions to determine which would be best for overall plant color before competing. Starting with four sets of four plants, the class decides to water each set with a different solution. They water them once a week with 200ml of the following solutions: water, diet soda, 1% bleach solution, and a 1% salt solution. All plants are placed in the window that receives the recommended amount of light. After a month of testing, your class notices that only two plants are alive, but one of those two does not look healthy. Based on these results, which of the following would be a good hypothesis to design the next experiment around?

A. Plants need more than 200 mL of liquid per week.

B. Salt has no impact on plant health.

C. Salt contains useful nutrients for plants.

D. A combination of the solutions tested will produce healthier plants.

Answer Explanation

Since only 2 out of the initial 16 plants survived the whole month, it would be reasonable to test variables that were shared by all the plants. As such, the amount of liquid the plants need would be a good follow-up experiment. It is not specified as to which plants survived, so there is not enough information to think that testing the impact of salt is warranted. Additionally, since almost all the plants died, it is not reasonable to assume that a combination of the solutions would have an impact.

Free Access on TEAS 7 Exams and Study Notes

Access to all TEAS 7 Exams
Performance Tracking and Analysis
Well Documented and Explained Questions and Answers
2000+ Questions and Correct Answers: Answers Well Explained
Libary of Detailed StudyNotes
Topical Questions and Answers on Examinable topics

Join Now

Which structure of the nervous system carries action potential in the direction of a synapse?

More Questions on TEAS 7 Science

Q #1: Where is the gastrocnemius vein in relation to the femoral vein?

Answer Explanation

Q #2: A doctor needs to convince his boss to approve a test for a patient. Which statement below best communicates a scientific argument that justifies the need for the test?

Answer Explanation

Q #3: Which of the below is the best definition for the term circulation?

Answer Explanation

Q #4: Which is NOT a major type of carbohydrate?

Answer Explanation

Q #5: What is a hypothetical explanation for an occurrence that is based on prior knowledge called?

Answer Explanation

Q #6: Which of these body parts does NOT produce melanin?

Answer Explanation

Q #7: A patient lying flat on their back is in which of the following positions?

Answer Explanation

Q #8: Which of the following are formed when the plasma membrane surrounds a particle outside of the cell?

Answer Explanation

Q #9: Which of the following statements concerning the states of matter is NOT true?

Answer Explanation

Answer Explanation

Free Access on TEAS 7 Exams and Study Notes

TEAS 7 Exams (Q&A)

TEAS 7 Study Notes

TEAS 7 Topical Tests

TEAS 7 Study Guides

Quick Links

Refer a Friend