Muscular System - 7.3 Exam Questions with

Muscular System - 7.3 Exam Questions with 100% Verified Correct Answers The thick myofilament in a muscle fiber is made of actin. - Correct Answer false Bursae and tendon sheaths have the same function. - Correct Answer true

A bursae is a sack-like structure filled with:

Select one:

• blood plasma
• blood
• synovial fluid
• lymph - Correct Answer c

The connective tissue that attaches muscle to bone is called:

Select one:

• origin
• insertion
• bursae
• tendon - Correct Answer d

Skeletal muscle is also called striated muscle. - Correct Answer true

The muscle attachment to the more stationary bone is called the:

Select one:

• tendon
• origin
• insertion
• bursae - Correct Answer b 1 / 2

According to the sliding filament model, in order for a sarcomere to contract:

Select one:

• bridges must form between actin and myosin
• calcium must be released from the endoplasmic reticulum
• ATP must be broken down for energy
• all of the above - Correct Answer d

In order for the necessary cross bridges to form, potassium must be released from the endoplasmic reticulum. - Correct Answer false

The thick myofilament of the skeletal muscles is made of:

Select one:

• Z-lines
• actin
• sarcomere
• myosin - Correct Answer d

The insertion of the muscle is on the more stationary bone. - Correct Answer false

Intercalated disks are found in:

Select one:

• cardiac muscle
• skeletal muscle
• smooth muscle
• voluntary muscle - Correct Answer a

Involuntary muscles are also called visceral muscles. - Correct Answer true

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