Anatomy & Physiology 7-8

Most of the more than 600 human skeletal muscles are attached to bones by fibrous connective tissue structures called tendons.

• True

• False

The most obvious function of the muscular system is to_____________________.

• move the skeleton

• increase metabolism

• pump blood

• none of these

Another function of the skeletal muscles is to produce heat.

• True

• False

Exchanges oxygen and carbon dioxide between the air and blood:

• Limbic System

• Respiratory System

• Cardiovascular System

• none of these

The muscular system forms a framework with moveable joints that are moved by muscles.

• True

• False

Transmits impulses to skeletal muscles to bring about contractions:

• respiratory system

• cardiovascular system

• nervous system

• none of these

Transports oxygen to muscles and takes carbon dioxide away:

• circulatory system

• respiratory system

• cardiovascular system

• none of these

The contracting proteins within a muscle fiber are: 

• troponin and tropomyosin

• hemoglobin and myoglobin

• myosin and myoglobin

• myosin and actin

When a muscle contracts, it lengthens and pulls a bone.

• true

• false

Some oxygen may be stored within muscle fibers bonded to the protein:

• myosin

• troponin

• myoglobin

• hemoglobin