Logo

Nursing Elites

ATI TEAS 7

Anatomy

1. The primary function of the atrioventricular (AV) node within the heart is to:

Correct answer: B

Rationale: The correct answer is B: "Transmit the electrical impulse from atria to ventricles, regulating the timing of contraction." The AV node acts as a gateway between the atria and ventricles, ensuring a coordinated and sequential contraction of the heart chambers. It delays the conduction of electrical impulses to allow the atria to fully contract before the ventricles contract, facilitating efficient blood pumping. Options A, C, and D are incorrect because the primary role of the AV node is not to generate electrical impulses, increase blood pressure, or separate blood flow based on oxygenation status. Understanding the AV node's function is crucial in comprehending the heart's electrical conduction system.

2. What is the relationship between genetic drift and the founder effect?

Correct answer: A

Rationale: Rationale: - The founder effect is a specific type of genetic drift that occurs when a small group of individuals establishes a new population, leading to a loss of genetic variation. - Genetic drift, on the other hand, is a broader concept that refers to random changes in allele frequencies in a population over time due to chance events. - Therefore, the founder effect is a specific scenario within the broader concept of genetic drift, where the establishment of a new population by a small number of individuals leads to genetic changes in the population.

3. Which force opposes the relative motion between surfaces in contact?

Correct answer: b

Rationale: Friction is the force that opposes motion between surfaces in contact.

4. Which part of the neuron is responsible for transmitting signals away from the cell body and toward other neurons or muscles?

Correct answer: a

Rationale: The correct answer is 'A: Axon.' The axon is a long, slender projection of a neuron that carries nerve impulses away from the cell body towards other neurons or muscles. It acts as the primary transmission line of the nervous system, sending electrical signals known as action potentials. Dendrites, on the other hand, receive signals from other neurons and transmit them towards the cell body. The synapse is the junction between two neurons where communication occurs. The myelin sheath is a fatty substance that surrounds and insulates the axon, speeding up the transmission of nerve impulses. Therefore, the axon is specifically responsible for transmitting signals away from the cell body, making it the correct answer.

5. Which law of motion states that for every action, there is an equal and opposite reaction?

Correct answer: c

Rationale: Newton's Third Law states the action-reaction principle.

6. What phenomenon occurs when two identical waves are perfectly aligned and reinforce each other?

Correct answer: d

Rationale: Constructive interference happens when identical waves meet in phase, resulting in a wave with increased amplitude.

Similar Questions

What phenomenon occurs when two identical waves are perfectly aligned and reinforce each other?
What is the relationship between the wavelength (λ) and frequency (f) of a wave with a constant speed (v)?
What term describes the bending of waves around obstacles or through openings?
What type of intermolecular force is responsible for the high surface tension of water?
What is the primary function of ribosomes in the cell?
What is the primary factor that determines whether a solute will dissolve in a solvent?

Access More Features

ATI TEAS Premium Plus
$149.99/ 90 days

  • Actual ATI TEAS 7 Questions
  • 3,000 questions with answers
  • 90 days access

ATI TEAS Basic
$1/ 30 days

  • 3,000 Questions with answers
  • 30 days access

Other Courses