What is one of the primary functions of muscles in the human body?

• To produce hormones

• To enable movement

• To digest food

• To filter blood

Which type of muscle is responsible for maintaining posture and resisting gravity?

• Antigravity muscles

• Cardiac muscles

• Smooth muscles

• Respiratory muscles

What percentage of body heat is produced by skeletal muscles?

• 50%

• 60%

• 85%

• 95%

How do skeletal muscles contribute to glycemic control?

• By producing insulin

• By absorbing, storing, and using glucose

• By breaking down proteins

• By releasing glucagon

What is the term for the fibrous band or sheet that bridges the gap in an indirect muscle attachment?

• Ligament

• Cartilage

• Tendon

• Fascia

What is the bony site of attachment at the relatively stationary end of a muscle called?

• Insertion

• Origin

• Belly

• Tendon

Which muscle has its origin on the scapula and its insertion on the radius?

• Triceps brachii

• Brachialis

• Biceps brachii

• Deltoid

What is the property of muscle cells that allows them to shorten when stimulated?

• Conductivity

• Extensibility

• Contractility

• Elasticity

Which characteristic of muscle cells involves the ability to stretch and then return to original length?

• Excitability

• Elasticity

• Conductivity

• Contractility

What type of muscle is usually attached to one or more bones and is subject to conscious control?

• Cardiac muscle

• Smooth muscle

• Skeletal muscle

• Involuntary muscle