Understanding Movement and Muscles

What is the primary function of movement in the body?

• To change the position of the body or a body part

• To produce energy

• To digest food

• To circulate blood

Which system controls movements in the body?

• Digestive system

• Nervous system

• Circulatory system

• Endocrine system

What is a reflex?

• A voluntary movement

• An automatic response to stimuli

• A conscious decision

• A type of muscle

Which part of the motor system is responsible for planning and initiating voluntary movements?

• Spinal cord

• Midbrain

• Cerebral cortex

• Hindbrain

What role does the spinal cord play in the motor system?

• Controls basic reflexes

• Plans voluntary movements

• Fine-tunes movements

• Regulates digestion

Which type of muscle is responsible for voluntary movement?

• Cardiac muscle

• Smooth muscle

• Skeletal muscle

• Involuntary muscle

Where is smooth muscle primarily found?

• Attached to bones

• In the heart

• In internal organs

• In the brain

What is the characteristic appearance of skeletal muscle?

• Striated

• Smooth

• Branched

• Non-striated

Which type of muscle is striated but involuntary?

• Skeletal muscle

• Smooth muscle

• Cardiac muscle

• Voluntary muscle

What neurotransmitter is released at the neuromuscular junction to cause muscle contraction?

• Dopamine

• Serotonin

• Acetylcholine (ACh)

• Norepinephrine