Bone Basics
What is the main mineral found in bones?
hydroxyapatite
How many bones make up the skull?
22
How many vertebrae are in the human spine?
33
What is the longest bone in the human body?
femur
What is the purpose of the skeletal system?
to provide structure and support to the body
How many bones are in the human skeletal system
206
What is the only movable bone in the skull?
mandible
What are the three main sections of the spine?
cervical, thoracic, and lumbar
How many bones are in the hand?
27
What unique feature does the hyoid bone have?
that it does not connect with any other bone
What are the three main types of cells found in bones?
osteoblasts, osteoclasts, and osteocytes
Name the two main parts of the skull.
cranium and facial bones
What is the function of the lumbar spine?
to bear most of the body's weight and allow for bending and lifting
What is the function of the radius in the forearm?
to allow for rotation of the wrist
How do ribs assist in breathing?
they expand and contract to help draw air into the lungs
What is the role of osteoblasts in the skeletal system?
build new bone
Which bone protects the brain and forms the back of the skull?
occipital bone
What connects the spinal cord to the brain?
the foramen magnum in the occipital bone
What is the role of the patella during movement?
to protect the knee joint and assist with leg movement
What is the function of the ossicles in the ear?
to transmit sound vibrations from the eardrum to the inner ear
Which type of bone cell helps maintain bone tissue?
osteocytes
What is the function of the temporal bone?
to protect the inner ear and house the auditory canal
How does the shape of the cervical spine differ from that of a giraffe?
The cervical spine in a giraffe is longer to support its long neck
Why is having two bones (radius and ulna) in the forearm beneficial?
provides flexibility and a greater range of motion
Why is the skeletal system important for overall health?
it protects vital organs and supports movement and growth