Human Skeletal and Muscular Systems

The video explores body systems focusing on support, protection, and movement. It covers the skeletal system, detailing different types of skeletons and their functions. The composition of bones, types of marrow, and various joints are explained. The muscular system is discussed, highlighting muscle types, structure, and the contraction process. Finally, the integumentary system's role in protection and temperature regulation is described.

Which type of skeleton is characterized by fluid under pressure in a closed body compartment?

• Endoskeleton

• Exoskeleton

• Cartilaginous skeleton

• Hydrostatic skeleton

What is the main function of the axial skeleton?

• To facilitate movement

• To provide a framework for muscle attachment

• To protect the internal organs

• To support the appendages

Which type of joint allows for rotational movement in multiple directions?

• Hinge joint

• Gliding joint

• Ball and socket joint

• Pivot joint

What is the primary role of tendons in the muscular system?

• To connect bones to each other

• To store energy

• To protect internal organs

• To attach muscles to bones

Which type of muscle tissue is found only in the heart?

• Smooth muscle

• Skeletal muscle

• Cardiac muscle

• Voluntary muscle

What is the role of ATP in muscle contraction?

• To provide structural support

• To connect muscle fibers

• To supply energy for filament movement

• To store calcium ions

Which proteins are involved in the sliding filament model of muscle contraction?

• Collagen and elastin

• Hemoglobin and myoglobin

• Actin and myosin

• Keratin and fibrin

What is the primary function of the integumentary system?

• To produce red blood cells

• To facilitate movement

• To regulate body temperature

• To aid in digestion

How does the integumentary system help in thermoregulation?

• By sweating and shivering

• By storing fat

• By absorbing nutrients

• By producing red blood cells

Which system is primarily responsible for defending against pathogens?

• Immune system

• Integumentary system

• Muscular system

• Skeletal system