INTEGUMENTARY SYSTEM

INTEGUMENTARY SYSTEM

INTEGUMENTARY SYSTEMIS COMPOSED OF NAILS, HAIR AND THE SKIN. INTEGUMENTARY SYSTEM PROTECTS US FROM PATHOGEN INVASION, HELPS KEEP THE BODY FROM DRYING OUT, ACTS AS STORAGE FOR FATTY TISSUE, PRODUCES VIT. D, PROVIDES SENSORY INPUT, AND IT REGULATES BODY TEMPERATURE. SKIN IS COMPOSED OF 3 LAYERS THE EPIDERMIS, THE DERMIS AND THE SUBCUTANEOUS FASCIA. NAILS ARE SPECIALIZED CELL ORIGINATING FROM THE NAIL ROOTS. HAIR HELPS REGULATE BODY TEMPERATURE. IT IS COMPOSED OF KERATIN. SHAFT IS THE HAIR THAT YOU SEE. SEBUM IS SECRETED BY THE SEBACEOUS GLANDS THAT IS OILY AND SOMEWHAT ANTIBACTERIAL

SKELETAL SYSTEM II

SKELETAL SYSTEM II

I LEARNED ALL ABOUT JOINTS. JOINTS ARE THE PLACE WHERE THE BONES MEET; JOINTS ARE ALSO CALLED ARTICULATION. THIS IS HELD TOGETHER BY A LIGAMENT. JOINTS HAVE 3 TYPES ACCORDING TO FUNCTION THESE ARE IMMOBILE, CAN MOVE A LITTLE AND FREELY. JOINTS IS ALSO CLASSIFIED ACCORDING TO STRUCTURE THESE ARE FIBROUS, CARTILAGINOUS AND SYNOVIAL. SYNOVIAL JOINTS ARE CLASSIFIED INTO 7 THE SADDLE, CONDYLOID, ELLIPSOIDAL, PIVOT, BALL & SOCKET, HINGE, AND GLIDING. SADDLE JOINT'S MOVEMENT IS UP&DOWN AND SIDE2SIDE. CONDYLOID'S MOVEMENT IS FROM OTHER PLACE TO ANOTHER BUT NO ROTATION. ELLIPSOIDAL HAS 2 AXES OF MOVEMENT. PIVOT ROTATES, BALL & SOCKET CAN DO ALL. HINGE ARE OPEN AND CLOSE. GLIDING ARE BACK AND FORTH. I ALSO LEARNED ABOUT CARTILAGE. THE SPECIAL CONNECTIVE TISSUE THAT CAN WITHSTAND FAIR AMOUNT OF FLEXION.

muscular system

Muscular system- came from the latin word mus, "mouse"





It has 3 types:

1.Cardiac-(voluntary) found on the walls on the heart
2.Skeletal-(involuntary) muscles which are attached to the bones
3.Smooth-(voluntary) commonly found on the walls of the internal organ