Chapter 5 Antomy And Physiology: Muscles And Nerves Flashcards
What is the primary function of muscles?
To produce movement by contracting.
True or False: There are three types of muscles in the human body.
True
What are the three types of muscles?
Skeletal, smooth, and cardiac.
Fill in the blank: Skeletal muscles are also known as __________ muscles.
Striated
What type of muscle is responsible for involuntary movements?
Smooth muscle
True or False: Cardiac muscle is found only in the heart.
True
What is the role of the nervous system in muscle contraction?
It sends signals to muscles to initiate contraction.
What is the basic unit of a muscle called?
Sarcomere
Multiple Choice: Which type of muscle is responsible for voluntary movements? A) Smooth B) Cardiac C) Skeletal
C) Skeletal
What is muscle fatigue?
A temporary inability of a muscle to generate force.
Fill in the blank: The __________ is the nerve that stimulates a muscle to contract.
Motor neuron
What is the function of the neuromuscular junction?
It is the site where the motor neuron communicates with the muscle fiber.
True or False: Smooth muscle is striated.
False
What is the difference between isotonic and isometric contractions?
Isotonic contractions change the length of the muscle, while isometric contractions do not.
What is the term for the ability of muscles to respond to stimuli?
Excitability
Fill in the blank: Muscles primarily use __________ for energy during contraction.
Adenosine triphosphate (ATP)
What are the two main types of nerve cells?
Neurons and glial cells.
Multiple Choice: Which type of neuron carries impulses away from the central nervous system? A) Sensory B) Motor C) Interneuron
B) Motor
What is the function of glial cells?
To support and protect neurons.
True or False: The central nervous system includes the brain and spinal cord.
True
What is the role of the peripheral nervous system?
To connect the central nervous system to the rest of the body.
Fill in the blank: The __________ nervous system controls involuntary actions.
Autonomic
What is the function of the somatic nervous system?
To control voluntary movements.
What is a reflex action?
An involuntary and immediate response to a stimulus.
