Chapter 36.1- Muscloskeletal System Flashcards
Antagonistic muscle pairs
pairs of muscles that work opposite to each other
Osteoporosis
Loss of protein (collagen) material from bone. Causes bone to become brittle and easily broken
Synovial Fluid
Lubricates joint and is a shock absorber
Ligament
Bone to Bone
Tendon
Muscle to bone
Cartilage
Composed of protein fibres + is flexible. Limits friction and is a shock absorber
Axial Skeleton
Central section of skeleton ie. skull, backbone, ribs, sternum
Appendicular Skeleton
Limbs ie. Pectoral girdle, pelvic girdle, limbs
Outgrowth
Attachment point on vertebrae for ligaments and tendons for movement of the spine
Neural Canal
Gap in vertebrae allow spinal cord through + protect it
Centrom
Thick solid part of a vertebra that holds the weight
Scapulas
Shoulder blade
Clavicle
Collarbone
Pectoral Girdle
Scapula and clavicle attached to back by muscles, for movement of the arm
Phalages
Toe and finger bones
Carpals
8 fused bones make up wrist
Free moving (synovial) joints
Joints that can move freely eg. knee
Metacarpals
bones that connect fingers to carpal, palm
Sacrum
5 fused bones at base of spine (between coccyx and lumbar)
Coccyx
Tailbone, 4 fused bones
Lumbar
lower back, 5 vertebrae
Thoraic
Upper back, 12 vertebrae
Cervical
Neck region of spine, 7 vertebrae
Radius
Larger of forearm bones
Ulna
Smaller of forearm bones
Humerus
Upper arm bone
Vertebrae
Bones that make up spine
Sternum
Breastbone
Femur
Thighbone
Tibia
Major shin bone
Fibula
Minor shin bone
Functions of skeleton
- movement
- support
- protection
- blood cell movement
- storage of minerals
skull
20 fused bones
True ribs
7 pairs attached to sternum
False ribs
3 pairs attached by cartilage
Floating ribs
2 pairs not attached at all
Digits
Fingers or toes, made out of phalanges
Pelvis
Two halves of hip bones fused to the base of the spine (sacrum)
Patella
Kneecap
Tarsals
Ankle, 7 bones
Metatarsals
5 bones make up sole
Three types of joints
Immovable
Partially moveable
Free moving
Immovable joints
bones fused together by collagen
Partially movable joints
Bones glide over each other eg. spine/ wrist
Free moving (synovial) joints
Ball and socket, Hinge
Cartilage
Made of protein fibres. Flexible and shock absorber
Arthritis
inflammation of the joint (100+ types)
Osteoarthritis
Most common, cartilage in synovial joints wears down
Rheumatoid arthritis
Autoimmune disease, body attacks synovial membranes, common in females
Prevention of arthritis
Reducing damage to joints eg. proper footwear, swimming>running
Treatment
- rest
- exercise
- weight loss
- anti-inflammatory medication
- possibly surgery
Flexor
muscle that closes a joint
Extensor
muscle that opens the joint
Skeletal muscle
voluntary muscle, movement
Smooth muscle
internal structures, involuntary
Cardiac muscle
does not tire, in heart