Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 12: Problem 24

Proper functioning of a neuromuscular junction requires the a. presence of acetylcholine. b. presence of a synaptic cleft. c. presence of a motor terminal. d. sarcolemma of a muscle cell. e. All of these are correct.

Short Answer

Expert verified
The proper functioning of a neuromuscular junction requires the presence of acetylcholine, a synaptic cleft, a motor terminal, and the sarcolemma of a muscle cell. Hence, the correct answer is e. All of these are correct.

Step by step solution

01

Understand the components.

Neuromuscular junction comprises various components, including acetylcholine, synaptic cleft, motor terminal, and sarcolemma. It's essential to understand the role of each component: a. Acetylcholine: It's a neurotransmitter that transfers signals between the motor neuron and muscle fiber. b. Synaptic cleft: The space between the motor neuron and muscle fiber, where the neurotransmitters are released. c. Motor terminal: It's the end of the motor neuron that releases acetylcholine into the synaptic cleft. d. Sarcolemma: It's the muscle fiber membrane that receives the signals from the motor neuron.
02

Analyze the requirements for proper functioning.

For a neuromuscular junction to function correctly, each component must work together: a. The presence of acetylcholine is crucial, as it transfers signals for muscle contraction. b. The presence of a synaptic cleft is necessary, as it facilitates signal transmission via chemicals. c. A motor terminal's presence is essential, as it releases acetylcholine to transmit the signal. d. The sarcolemma of a muscle cell is required, as it is the site of signal reception and activation of muscle contraction. Since all components need to be present for the proper functioning of a neuromuscular junction:
03

Select the correct answer.

All of these components are essential for the proper functioning of a neuromuscular junction. Therefore, the correct answer is: e. All of these are correct.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

As ADP and ? are released from a myosin head, a. actin filaments move toward the H zone. b. myosin cross-bridges pull the thin filaments. c. a sarcomere shortens. d. Only a and care correct. e. All of these are correct.

Which of the following muscles would have motor units with the lowest innervation ratio? a. leg muscles b. arm muscles c. muscles that move the fingers d. muscles of the trunk

In a muscle fiber, a. the sarcolemma is connective tissue holding the myofibrils together. b. the \(\mathrm{T}\) system causes release of \(\mathrm{Ca}^{2+}\) from the sarcoplasmic reticulum. c. both actin and myosin filaments have cross-bridges. d. there is no endoplasmic reticulum. e. All of these are correct.

Which of these energy relationships are mismatched? a. creatine phosphate-anaerobic b. cellular respiration-aerobic c. fermentation-anaerobic d. oxygen debt-anaerobic e. All of these are properly matched.

Match each function to a muscle of the head and neck in the key. a. trapezius b arhicularis aculi c. masseter Moves head and scapula
See all solutions

Recommended explanations on Biology Textbooks

Organ Systems

Read Explanation

Chemistry of Life

Read Explanation

Biology Experiments

Read Explanation

Microbiology

Read Explanation

Substance Exchange

Read Explanation

Plant Biology

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free