SKELETAL SYSTEM
What is the largest bone in the human body?
FEMUR
This is the hard outer layer of the tooth that protects it from damage.
ENAMEL
What is a neuron?
This is the basic functional cell of the nervous system.
This type of muscle is found in organs such as the stomach and intestines and works automatically.
SMOOTH MUSCLE
Which two systems work directly together to produce body movement?
Muscular and Skeletal Systems
What type of joint is found at the elbow?
HINGE JOINT
This part of the tooth contains blood vessels and nerves.
PULP
This part of the neuron receives signals from other neurons.
Dendrites
_________________ is the straining of abdomen from lifting a heavy object.
Hernia
A person has damage to their spinal cord. Explain why this could affect their ability to move their legs.
The spinal cord carries messages between the brain and the body. Damage can interfere with nerve signals traveling to the muscles, which can affect movement.
A ________________________ is when the bone breaks into two.
Transverse Fracture
A sticky film containing bacteria that forms on teeth.
Identify the TWO major divisions of the nervous system.
Central nervous system and Peripheral nervous system
These muscles are striated or striped under the microscope.
Skeletal Muscles
What is the difference between voluntary and involuntary actions?
Voluntary actions are consciously controlled; involuntary actions happen automatically.
A person can rotate their head from side to side because of this type of joint between the first two vertebrae.
A PIVOT JOINT
As babies grow cartilage hardens through a process called ______________.
Ossification
Unlike other types of cells, nerves cannot what?
Repair themselves.
Where are your gastrocnemius muscles?
Calf!
The Skeletal System consists of ___________ bones and connective tissue.
206
What type of joint are your knuckles?
Ellipsoidal joints
What is the condition of bad breath as a sign of decayed teeth?
Halitosis
What is the thickness of your spinal cord?
Approx. your index finger
A student damages a tendon. Which two structures does this tissue normally connect?
Muscle and bone
What reduces friction between bones at joints?
Cartilage