Muscular System
What is the basic functional unit of a muscle?
Muscle Fiber
What is the basic cell of the nervous system?
Neuron
Region of the Abdomen
Abdominal Cavity
What is the largest organ of the body?
Skin
What does anterior mean?
The front of the body
Name the muscle that covers the front of the thigh.
Quadricep
What structure connects the brain to the body?
Spinal Cord
Region that houses the lungs and heart
Thoracic Cavity
What pigment gives skin its color?
Melanin
A doctor says a patient has pain on the “distal lateral” part of the leg. What does that tell you about the location?
The pain is on the outer side of the leg, far from the hip (closer to the foot).
Why do muscles get sore after exercise?
Microtears in muscle fibers. Inflammation and repair
Why do nerves send messages to your muscles?
So your muscles know when to move
A patient has pain in the inguinal region. Where is it?
Located in the groin area
How does skin help regulate body temperature?
Sweat glands cool the body, blood vessels dilate/contract
If the heart is superior to the stomach, what does that mean?
The heart is above the stomach
Which type of muscle is involuntary and found in organs?
Smooth muscle
What part of the neuron sends messages away from the cell body?
Axon
Why do injuries to the thoracic cavity need careful attention?
It holds the heart and lungs. Damage can be life-threatening.
What layer of skin contains hair follicles and glands?
Dermis
What does lateral mean?
Away from the midline or toward the side of the body
Why does strength training increase muscle size?
Repeated stress causes muscle fibers to grow thicker and stronger
Why can spinal cord injuries lead to paralysis?
Signals from brain cannot reach muscles below the injury
Why can swelling in the abdominal cavity cause problems with breathing?
Swelling pushes against the diaphragm. Lungs cannot expand fully
Why do cuts in the dermis bleed, but cuts in the epidermis may not?
Dermis has blood vessels, epidermis does not
If you cut along a parasagittal plane, what does this mean?
A cut parallel to the midline, but creates unequal left and right sections.