Muscular System - Part One

The major functions of the muscular system include (a)   and stability.

• Movement
• Digestion
• Hormone production
• Sensory perception

The structure of skeletal muscles and muscle fibers is described as:

• A complex network of neurons and synapses

• A series of interconnected bones and joints

• Bundles of fibers composed of myofibrils

• Layers of skin and connective tissue

Muscle contraction is primarily explained by (a)   mechanism.

• Sliding filament
• Lock and key
• Fluid mosaic
• Golgi tendon

Gross Movement in the muscular system is:

• The movement of small muscles for fine motor skills

• The movement of large muscles for major actions

• The movement of muscles in the digestive systemT

• The movement of muscles in the respiratory system

Fine Movement in the muscular system is:

• The ability to perform large movements

• The ability to perform small, precise movements

• The ability to maintain posture

• The ability to generate force

Visceral Movement in the muscular system refers to:

• The movement of skeletal muscles

• The movement of smooth muscles in the internal organs

• The movement of cardiac muscles

• The movement of voluntary muscles

The role of muscles in constant adjustment for posture and stability is to (a)  

• Provide energy for movement
• Maintain balance and support
• Facilitate digestion
• Enhance sensory perception

Core muscles contribute to core strength and stability by (a)  

• Providing support to the spine and pelvis
• Increasing flexibility of the limbs
• Enhancing muscular endurance
• Improving range of motion

The importance of joint stability in the muscular system is (a)  

• To allow for greater flexibility
• To prevent injuries and maintain posture
• To increase muscle mass
• To enhance muscular endurance

The shivering mechanism helps in maintaining body temperature by (a)  

• Producing heat through muscle contractions
• Increasing blood flow to the skin
• Decreasing metabolic rate
• Enhancing heat loss through sweating