Module 2 Study Guide Flashcards
Stem cells
Develops into variety of cells
Epithelial Tissue
Protects, secretes, absorbs, filtration
Connective tissue
Collagen’s fibers are most abundant
Muscle tissue
Skeletal- voluntary
Cardiac(heart)- involuntary
Smooth- involuntary
Nervous tissue
Found in brain, spinal cord, and nerves
Tissue
Group of similar cells that perform common function
Dermis
Connective tissue
- had blood vessels, sweat glands, sebaceous glands, nerve endings, hair follicles
Stratum basal
Forms new cells
- New skin cells push old ones up that form keratin
Melanin
Protects nucleus from uv rays
Arrector pili muscle
Smooth muscle on follicle that helps it stand straight
Thermoregulation
In dermis nerves are constricting/ dilating blood vessels
Flat bone
- Protect organs
- provide large surface area for attachment of muscles
Diaphysis
Hollow cylinder made of compact bone
- gives bone strength
Osteoblasts
Cells that form bones
Osteoclasts
Cells dissolving unwanted bone
Osteocytes
Mature osteoblasts embedded in bone matrix
- dissolve and deposit bone
- maintain/ regulate blood levels of calcium and phosphorus
Calcium(crystalline) salts
Give bone compressional strength
Appendicular skeleton
Bone of limbs, pelvic, and shoulder areas
Bone surface markings
Provide routes for blood vessels and nerves, surface for muscle attachment, and areas for joint formation
Vertebrae Column
Cervical(7)
Thoracic(12)
Lumbar(5)
Sacral(5)
Coccyx (4)
Intervertebral Disc
Supports weight and absorbs shock
Myofibrils
Long protein bundles that fill
Sacromere
- store glycogen and oxygen
Sacomeres
Lattice arranged myofibrils
Contractions require
Threshold(minimum voltage), motor unit(neuron), twitch(brief contact)
Muscle contraction
Impulse reaches end of motor neuron causing release of ACH
Amphiarthroses joint
Semi movable joint by cartilage
Suture joints
Fibrous fixed joints
Synovial joints (freely movable)
Most numerous and versatile joints
Joint capsule
Sheet of connective tissue that encloses joint cavity
Condyloid Joint
Allows flexion, extension, and side to side movement
