Skeletal System

Axial Skeleton

Consists of 80 bones

Appendicular Skeleton

Consists of 126 bones

Skellein

Means dried up

Calcium and Phosphorus

Main minerals in the skeletal system

Hematopoiesis

the formation of blood cells in the living body

Tendons

Connects muscle to bone

Ligaments

Connects bone to bone

Cartilage

Found in between bones

Also known as shock absorber

Girdle

Means belt or zone

Lipids

Source of energy in tissues

Glenoid Cavity

Point of fusion of 3 coxal bones

Also found in scapula

Clavicle and Scapula

Comprises the pectoral girdle

Deltoid Tuberosity

Raised area on lateral surface of humerus to which deltoid muscle attaches

Axis

Its dens provides a pivot for rotation of the first cervical vertebra

Vertebral Arch

The structure that encloses the nerve cord

Lateral Malleoulus

Bones of the ankle

Capitulum

Rounded knob on the humerus that articulates with the radius

Cervical Vertebrae

It contains foramina in the transverse processes which the vertebral arteries ascend to reach the brain

Body

The weight bearing portion of the vertebra

Atlas

It supports the head, allows the rocking motion of the occipital condyles

Phalanges

The bones present in both the hand and foot

Metacarpal

Bones that form the knuckles

Facet

Smooth, nearly flat articular surface

Meatus

Canal-like structure

Spine

Sharp, slender process

Tubercule

Small, rounded projection

Tuberosity

Large, rounded projection

Head

Structure supported by the neck

Ramus

Arm-like projection

Crest

Narrow ridge of bone

Fissure

Narrow opening

Foramen

Round or oval opening through a bone

Fossa

Shallow depression

Condyle

Rounded, convex project

Epicondyle

Raised area on or above a condyle

Sinus

Air-filled cavity

Trochanter

Large, irregular shaped projection

Process

Projection or prominence

Magnum Foramen

Largest foramen

Long Bone

Femur

Long Bone

Humerus

Long Bone

Phalanges

Flat Bone

Sternum

Flat Bone

Sternum

Short Bone

Tarsal

Short Bone

Carpal

Irregular Bone

Atlas

Irregular Bone

Coxal Bone

Flat Bone

Parietal Bone

Long Bone

Ulna

Long Bone

Fibula

Irregular Bone

Vertebrae

Irregular Bone

Hip Bone

Short Bone

Patella

Long Bone

Mostly compact bone with spongy bone at ends.

Short Bone

Mostly spongy bone with an outer layer of compact bone.

Flat Bone

A spongy bone sandwiched by two thin layers of compact bones.

Irregular Bone

Does not fit any other bone classification.

Short Bone

Generally cube-shaped

Long Bone

Shaft with enlarged ends.

Flat Bone

Thin, flattened, and usually curved.

Skull

Axial Skeleton

Hyoid Bone

Axial Skeleton

Mandible

Axial Skeleton

Vertebral Column

Axial Skeleton

Ribs

Axial Skeleton

Sternum

Axial Skeleton

Sacrum

Axial Skeleton

Coccyx

Axial Skeleton

Clavicle

Appendicular Skeleton

Scapula

Appendicular Skeleton

Humerus

Appendicular Skeleton

Ulna

Appendicular Skeleton

Radius

Appendicular Skeleton

Carpals

Appendicular Skeleton

Metacarpals

Appendicular Skeleton

Phalanges

Appendicular Skeleton

Tarsals

Appendicular Skeleton

Metatarsals

Appendicular Skeleton

Hip Bone

Appendicular Skeleton

Coxal Bone

Appendicular Skeleton

Femur

Appendicular Skeleton

Patell

Appendicular Skeleton

Tibia

Appendicular Skeleton

Fibula

Appendicular Skeleton

C1, C2, C3, C4, C5, C6, C7

Cervical Vertebrae

T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12

Thoracic Vertebrae

L1, L2, L3, L4, L5

Lumbar Vertebrae

Lacrimal Bone

Provide grooves for tear ducts

Vomer

Bone that divides the nasal cavity

8

How many cranial bones are in the skull

7

How many pairs of true ribs are present in the human body

3

How many pairs of false ribs are present in the human body

2

How many pairs of floating ribs are present in the human body

Acromion of the Scapula

large bony projection on the superior end of the scapula

Trapezoid Bone

Smallest carpal bone

80%

skeletal system makes up ___ of body mass

Decrease

number of bones ______as we age because they fuse together