Understanding Human Muscles

The video tutorial by Mister Klik covers the role of muscles as active movement tools in the human body. It explains the functions of muscles, such as supporting posture, stabilizing joints, and producing heat. The tutorial describes the three types of muscles: smooth, striated, and cardiac, highlighting their characteristics and roles. It also discusses how muscles work through contraction and relaxation, and the different types of muscle actions, including synergistic and antagonistic movements.

What are the two basic functions of muscles?

• Contraction and relaxation

• Flexing and extending

• Rotating and stabilizing

• Expansion and contraction

Which of the following is NOT a function of muscles?

• Supporting the body to stand upright

• Producing heat through metabolism

• Generating electrical impulses

• Stabilizing joints

How many types of muscles are there based on structure and function?

• Five

• Four

• Three

• Two

Where are smooth muscles primarily located?

• In the skeletal system

• In internal organs

• In the skin

• In the heart

Which type of muscle is characterized by having multiple nuclei located at the periphery?

• Striated muscle

• Skeletal muscle

• Smooth muscle

• Cardiac muscle

What is a unique feature of cardiac muscle?

• It is voluntary

• It has a single nucleus

• It is striated and branched

• It is found in the digestive system

Which muscle type works without conscious control?

• Skeletal muscle

• Smooth muscle

• Striated muscle

• Voluntary muscle

What is the term for muscles that work together in the same direction?

• Antagonistic

• Opposing

• Synergistic

• Complementary

Which muscle pair is an example of antagonistic muscles?

• Biceps and triceps

• Quadriceps and hamstrings

• Abdominals and obliques

• Deltoids and pectorals

What is the primary function of muscles in relation to bones?

• To protect bones

• To generate heat

• To move bones

• To store calcium