Med Term, Musculoskeletal System Flashcards
Acromion
Part of the scapula that connects to the clavicle.
Acetabulum
Cup-shaped depression in the hip bone into which the top of the femur fits.
Amohiathrosis
Cartilaginous joint having some movement at the union of two bones.
Ankle
Hinged area between the lower leg bones and the bones of the foot.
Articular cartilage
Cartilage at a joint.
Articulation
Point at which two bones join together to allow movement.
Atlas
First cervical vertebra.
Axis
Second cervical vertebra.
Bone
Hard connective tissue that forms the skeleton of the body.
Bone head
Upper, rounded end of a bone.
Bone phagocyte
Bone cell that ingests dead bone and bone debris.
Bursa
Sac lines with a synovial membrane that fills the spaces between tendons and joints.
Calcaneus
Heel bone.
Calcium
Mineral important in the formation of bone.
Cancellous bone
Spongy bone with a latticelike structure.
Cardiac muscle
Striated involuntary muscle of the heart.
Carpus, carpal bone
Wrist; wrist bone.
Cartilage
Flexible connective tissue found in joints, fetal skeleton, and the lining of various parts of the body.
Cartilaginous disk
Thick, circular mass if cartilage between the vertebrae of the spinal column.
Cervical vertebrae
Seven vertebrae of the spinal column located in the neck.
Clavicle
Curved bone of the shoulder that joins to the scapula; collar bone.
Coccyx
Small bone consisting of four fused vertebrae at the end if the spinal column; tailbone.
Compact bone
Hard bone with a tightly woven structure.
Condyle
Rounded surface at the end of a bone.
Crest
Bony ridge.
Diaphysis
Long middle section of a long bone; shaft.
Diarthoses
Freely moveable joints.
Disk
Thick, circular mass of cartilage between the vertebrae of the spinal column.
Dorsal vertebrae
Thoracic vertebrae.
Elbow
Joint between the upper arm and the forearm.
Endosteum
Lining of the medullary cavity.
Epiphyseal plate
Cartilaginous tissue that is replaced during growth years, but eventually calcifies and disappears when growth stops.
Ethmoid bone
Irregular bone of the face attached to the sphenoid bone.
Ethmoid sinuses
Sinuses on both sides of the nasal cavities between each eye and the sphenoid sinuses.
Fascia
Sheet of fibrous tissue that encloses muscles.
Femur
Long bone of the thigh.
Fibula
Smallest long bone of the lower leg.
Fissure
Deep furrow or slit.
Flat bones
Thin, flattened bones that cover certain areas, as of the skull.
Fontanelle
Soft, membranous section on top of an infant’s skull.
Foramen
Opening or perforation through a bone.
Foramen magnum
Opening in the occipital bone through which the spinal cord passes.
Fossa
Depression, as in a bone.
Frontal bone
Large bone of the skull that forms the top of the head and forehead.
Frontal sinuses
Sinuses above the eyes.
Heel
Back, rounded portion of the foot.
Humerus
Long bone of the arm connecting to the scapula on top and the radius and ulna at the bottom.
Ilium
Wide portion of the hip bone.
Insertion
Point at which a muscle attaches to a movable bone.
Intervertebral disk
Thick, circular mass of cartilage between the vertebrae of the spinal column.
Involuntary muscle
Muscle not movable at will.
Irregular bones
Any of a group of bones with a special shape to fit into a certain areas of the skeleton, such as the skull.
Ischium
One of three fused that form the pelvic girdle.
Joint
Place of joining between two or more bones.
Lacrimal bone
Thin, flat bone of the face.
Lamina
Thin, flat part of either side of the arch of a vertebrae.
Ligament
Sheet of fibrous tissue connecting and supporting bones; attaches bone to bone.
Long bone
Any bone of the extremities with a shaft.
Lumbar vertebrae
Five vertebrae of the lower back.
Malleolus
Rounded protrusion of the tibia or fibula on either side of the ankle.
Mandible
U-shaped bone of the lower jaw
Mandibular bone
Mandible
Marrow
Connective tissue filling the medullary cavity, often right in nutrients.
Mastoid process
Protrusion of the temporal bone that sits behind the ear.
Maxillary bone
Bone of the upper jaw
Maxillary sinus
Sinus on either side of the nasal cavity below the eyes.
Medullary cavity
Soft center cavity in bone that often holds marrow.
Metacarpal
One of five bones of the hand between the wrist and fingers.
Metaphysis
Section of a long bone between the epiphysis and diaphysis.
Metatarsal bones
Bones of the foot between the instep (arch) and the toes.
Muscle
Contractile tissue that plays a major role in body movement.
Muscoskeletal system
System of the body including the muscles and skeleton.
Nasal bones
Bones that form the bridge of the nose.
Nasal cavity
Cavity in either side if the nasal septum.
Neural canal
Space through which the spinal cord passes.
Nucleus pulposus
Fibrous mass in the center portion of the intervertebral disk.
Occipital bone
Bone that forms the lower back portion of the skull.
Olecranon
Curved end of ulna to which tendons of the arm muscles attach; bony prominence of the elbow.
Origin
Point at which muscles attach to stationary bone.
Osseous tissue
Connective tissue into which calcium salts are deposited.
Ossification
Hardening into bone.
Osteoblast
Cell that forms bone.
Osteoclast
Large cell that reabsorbs and removes Osseous tissue.
Osteocyte
Bone cell.
Palatine bone
Bone that helps the hard palate and nasal cavity; located behind the maxillary bones.
Parietal bone
Flat, curved bone on either side if the upper part of the skull.
Patella
Large, Sesamoid bone that forms the kneecap.
Pelvic cavity
Cup-shaped cavity formed by the large bones of the pelvic girdle; contains female reproductive organs, sigmoid colon, bladder, and rectum.
Pelvic girdle
Hip bones.
Pelvis
Cup-shaped ring of bone and ligaments at the base if the trunk.
Periosteum
Fibrous membrane covering the surface of bone.
Phalanges (phalanx)
Long bones of the fingers and toes.
Phosphorus
Mineral important to the formation of bone.
Process
Bony outgrowth or projection.
Pubes
Anteroinferior portion of the hip bone.
Pubic symphysis
Joint between the two public bones.