Exploring the Functions of the Muscular System

The video explains the muscular system, which includes over 650 muscles responsible for movement and vital functions. It covers the three types of muscles: skeletal, cardiac, and smooth, detailing their roles and control mechanisms. Muscle contraction types are discussed, highlighting their importance in movement and stability. The video also explores how muscles use energy and produce heat, essential for maintaining body temperature.

How many muscles are involved in taking a single step?

• 200 muscles

• Over 650 muscles

• About 100 muscles

• 300 muscles

What type of muscle is found only in the heart?

• Skeletal muscle

• Fibrous muscle

• Smooth muscle

• Cardiac muscle

Which muscle contraction type is responsible for stabilizing forces?

• Shortening

• Eccentric

• Lengthening

• Isometric

What allows us to grip objects like a mug?

• Skeletal muscle rigidity

• Isometric contraction

• Smooth muscle action

• Cardiac contraction

Which nervous system controls skeletal muscles?

• Autonomic nervous system

• Central nervous system

• Peripheral nervous system

• Somatic nervous system

What is the smallest skeletal muscle in the body?

• Sartorius

• Buccinator

• Stapedius

• Gluteus minimus

Which muscles are not under direct voluntary control?

• Skeletal muscles

• Leg muscles

• Cardiac and smooth muscles

• Facial muscles

What function does the autonomic nervous system not influence?

• Blood circulation

• Heartbeat

• Facial expressions

• Digestion

Approximately what percentage of body heat is generated by muscles?

• 50%

• 65%

• 85%

• 95%

Which muscle helps in pushing food through the digestive system?

• Elastic muscle

• Cardiac muscle

• Smooth muscle

• Skeletal muscle