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Four cell types of the epidermis

Keratinocytes, Melanocytes, Langerhans cells and Merkel Cells

Layers of the epidermis

Basale, Spinosum, Granulosum, Lucidum and Corneum

Thick Skin

Contains 5 layers

Think Skin

Contains 4 layers

Regions of the dermis

Papillary and Reticular

Hypodermis

Subcutaneous region; bellow the dermis

Sebaceous ? Gland

Oil

Sudoriferous ? Gland

Sweat

Adult Skeleton has

206 Bones

Axial Skeleton has

80 bones

Appendicular Skeleton has

126 bones

Diaphysis

"Shaft" Formed by compact bone

Periosteum

Vascularized, dense-irregular connective tissue; surrounds the diaphysis

Periosteum

contains osteogenic cells

Osteogenic Cells

Differentiate into osteoblasts

Osteoblasts

Bone remodeling / repair

Epiphysis

Spongy bone is found in the ___ proximal and distal ends of the bone and the lining of the medullary cavity

Epiphysis and medullary cavity

Contains red bone marrow in children

Medullary Cavity

Contains yellow bone marrow in adults

Metaphysis

Between the diaphysis and the epiphysis; contains the epiphyseal growth plate

Epiphyseal growth plate

Region of cartilage that produces new bone until adulthood

Long bones

Femur, humerus and clavicle

Short bones

Roughly cube-shaped; Carpals and tarsals

Flat bones

Generally thin and consists of two parallel plates of compact bone with an inner layer spongy bone trabeculae; Cranial bones, sternum, ribs and scapula

Sesamoid bones

Between tendons and ligaments- do not articulate with bones; Patella

Wormian bones

"Sutural Bones" Occurs between the plates of the skull

Irregular bones

Have complex shape; Vertebrae, hp bones, facial bones and the calcaneus

Fissure

Narrow slit between adjacent parts of the bones through which blood vessels or nerves pass

Foramen

Hole; opening through which blood vessels, nerves or ligaments pass

Fossa

Trench; Shallow depression

Sulcus

Groove; Furrow along a bone surface that accommodates a blood vessel, nerve or tendon

Meatus

Passageway; tubelike opening

Condyle

Knuckle; large, round protuberance at the end of the bone; Femur

Facet

Smooth flat articular surface; Vertebra

Head

Rounded articular projection supported on the neck of the a bone

Crest

Prominent ridge or elongated projection

Epicondyle

Projection above the condyle

Line

Long, narrow ridge or border

Spinous Process

Sharp, slender projection

Trochanter

Very large projection

Tubercle

Small, rounded projection

Tuberosity

Large, rounded, roughened projection

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