FLVS Anatomy and Physiology - Semester 1 - Module 2

How would the diagram above appear if the sarcomere contracted? (2 points)

The cross bridge would move the actin filaments towards the center of the myosin.

A calcium deficiency would (2 points)

prevent contraction by preventing myosin from binding to actin

Which of the muscles is the pectoralis major? (2 points)

A

Where would muscle C in the image set most likely be found? (2 points)

Attached to a tendon

Which letter is pointing to the deltoid muscle? (2 points)

B

Which letter is pointing to the triceps muscle? (2 points)

C

Not eating the proper amount of food reduces the availability of ATP in muscle tissue. This will prevent which of the following muscle components from performing its function? (2 points)

Myosin

Which muscle is identified in the image above? (2 points)

Rectus abdominus

Which of the following correctly describes the appearance of muscle tissue found in the heart? (2 points)

Single-nucleus, striated, branching cells

A doctor asks a patient to stick out her tongue. Which kind of muscle does the patient use to follow this request? (2 points)

Skeletal

Which types of muscle tissue would most likely be used to move food within the stomach? (2 points)

Smooth

How would the H-zone in a contracted sarcomere differ from that of a relaxed sarcomere? (2 points)

The H-zone is narrower in a contracted sarcomere.

You are examining two unknown muscle cells under the microscope. Cell A could be cardiac muscle and cell B could be skeletal muscle if (2 points)

both are striated

In rigor mortis, the muscles contract hours after death due to a breakdown of the sarcoplasmic reticulum. This is because the sarcoplasmic reticulum stores (2 points)

calcium, which triggers muscle contractions

A surgeon removes a section of a body organ. Once removed, the muscle tissue continues to contract, even in the absence of nervous stimulation. The removed section likely came from the (2 points)

heart