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42 terms

Integumentary / Skeletal System

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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