FREE PHYSIOLOGY AND STUDY GAMES ABOUT

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FREE PHYSIOLOGY AND STUDY GAMES ABOUT

ASSIGNMENT 1 EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -11 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: Smooth, sustained contractions are called tetanic contractions or called:

Answer:

Tetnus

Question 2: Which muscle cells contains zero gap-junctions?

Answer:

Skeletal

Question 3: What gives the striations in cardiac muscle?

Answer:

The regular organization of myofibrils into sarcomeres in the muscle tissue

Question 4: Which two types of muscles are involuntary?

Answer:

Cardiac and Smooth

Question 5: What body parts is cardiac muscle found in?

Answer:

only the heart Question 6: True or False: During contraction, myosin cross bridges pull the thin filaments away from the center of each of two sarcomeres, thus shortening the myofibril and the entire muscle fiber.

Answer:

False: During contraction, myosin cross bridges pull the thin filaments TOWARD the center of each of two sarcomeres, thus shortening the myofibril and the entire muscle fiber.Question 7: Tonic contraction, or muscle tone, is the low level of continuous contraction characteristic of the muscles of normal individuals when they are awake. This is important because

Answer:

Muscle tone plays an important role in posture.

Question 8: What is the neuromuscular junction NMJ?

Answer:

A synaptic connection between the terminal end of a motor nerve and a muscle Question 9: True or false: Skeletal muscles contain many nucleuses

Answer:

True Question 10: The three phases of the twitch contraction are:

Answer:

the latent period, the contraction phase, and the relaxation phase

Question 11: What are the general functions of the Muscular system

Answer:

• Movement
• Heat production
• Posture