10 lower back vertebrae; attach to pelvis

12 middle back vertebrae; attach to ribs

7 neck vertebrae; support the head

5 upper back vertebrae; connect to the skull

Lightweight inner bone layer; filled with marrow spaces

Dense outer bone layer; provides strength

A type of cartilage found in joints

Bone tissue that is primarily composed of fat

Shaft or central part of a long bone

The end part of a long bone

A type of bone marrow

A joint between two bones

Bone with a shaft (diaphysis) and two ends (epiphyses)

Bone that is wider than it is long

Bone that is primarily composed of spongy tissue

Bone that forms the protective case around the brain

Surrounding, around

Inside, within

Above, over

Below, under

Growth

Decay

Stagnation

Reduction

Breaking down

Building up

Holding together

Separating apart

3 lower back vertebrae; support most body weight

5 lower back vertebrae; support most body weight

7 lower back vertebrae; support most body weight

5 upper back vertebrae; support most body weight

Tiny canals connecting bone cells for nutrient exchange

Large vessels for blood circulation in bones

Cells responsible for bone formation

Spaces filled with bone marrow

Formation of red and white blood cells in red bone marrow

Process of blood clotting in the circulatory system

Production of hormones in the endocrine system

Formation of lymphatic fluid in lymph nodes

Bone cell that breaks down bone tissue

Bone cell that forms new bone

Bone cell that stores fat

Bone cell that produces blood cells

A joint that allows no movement

A joint that allows limited movement

Freely movable joint containing synovial fluid

A joint that connects bones with cartilage

Spinal curves present at birth (thoracic and sacral)

Curves that develop during childhood (cervical and lumbar)

Curves that are formed due to poor posture

Curves that are only present in the lumbar region

Tissue that produces blood cells; found in young bones

Tissue that stores fat; found in older bones

Tissue that supports nerve function; found in the brain

Tissue that forms cartilage; found in joints

Hormone that increases blood calcium by breaking down bone

Hormone that decreases blood calcium by building bone

Hormone that regulates blood sugar levels

Hormone that increases blood pressure

Spinal curves that develop after birth (cervical and lumbar)

Curves present at birth (thoracic and sacral)

Curves that develop due to aging

Curves that are only present in infants

Central canal in osteon containing blood vessels and nerves

A type of joint in the human body

A structure found in the heart

A type of muscle tissue

Fluid that reduces friction in joints

A type of muscle tissue

A component of blood

A type of connective tissue

Little neck

Big neck

Long neck

Short neck