anatomical terminology - bone markings, articulations, cartilage, & muscles Flashcards
definition of bone
strong connective tissue containing specialized cells;
contains a mineralized matrix of calcium phosphate & calcium carbonate
definition of muscle
contractile organs composed of muscle tissue, blood vessels, nerves, connective tissues & lymphatic vessels
definition of ligament
dense band of connective tissue fibres that attaches a bone to another bone
definition of tendon
a collagenous band that connects a skeletal muscle to a bone
definition of cartilage
connective tissue that is more flexible than bone & protects the ends of bones and keeps them from rubbing together
definition of a joint
an area where adjacent bones interact with one another
what is another name for joint?
articulation
definition of a joint capsule
a tough sheath or membrane that encloses a synovial joint
definition of a synovial membrane
a layer of connective tissue that lines the cavities of joints, tendon sheaths, & bursae;
secretes synovial fluid
definition of synovial fluid
secreted by synovial membrane;
used for joint lubrification, shock absorption, provides nutrients & collects metabolic waste
definition of fascia
connective tissue fibres composed of collagen that forms bands beneath the skin;
attaches, stabilizes, encloses, & separates muscles & other internal organs
what are the different bone types?
long, short, flat, irregular, & sesamoid bones
what are long bones?
bones with a length greater than its width;
consists of a shaft & two epiphyses
how are long bones stronger than other bones?
they have a curvature that allows for more stresses to be absorbed
what are short bones?
bones that approximately have the same length & width
short bones are only found where?
in the ankle & wrist
what are flat bones?
bones that are broad, flat, & thin in size
what are irregular bones?
bones with complex shapes that cannot be categorizes as long, flat or short bones
what are sesamoid bones?
round & flat bones that develop in certain tendons as a result of stress;
may not be fully ossified
examples of long bones
femur, humerus, tibia, fibula, metacarpals, metatarsals, phalanges
examples of short bones
carpals & tarsals
examples of flat bones
scapula, sternum, cranium, pelvis, ribs
examples of irregular bones
vertebrae, sacrum, mandible
examples of sesamoid bone
patella
what kinds of bone markings are there?
depressions, openings, & projections
types of depression bone markings
facet, fossa, fovea, groove, & notch
types of opening bone markings
canal, fissure, foramen
types of projection bone markings
condyle, crest, epicondyle, head, line, malleolus, process, protuberance, spine, trochanter, tubercle, tuberosity
definition of a facet
a flat & smooth articular surface
definition of a fossa
shallow depression in a bone (often in an articular surface)
definition of a fovea
a small pit
definition of a groove
a canal between two bony protuberances;
accommodates blood vessels, nerves or tendons
definition of a notch
a depression in a bone that improves stabilization
definition of a canal
a passage in a bone
what’s another name for a canal?
a meatus
definition of a fissure
an open slit that houses nerves or blood vessels
definition of a foramen?
a round or oval opening in a bone
definition of a condyle
a rounded or protruding articular surface
definition of a crest
a sharp & elongated bony ridge
definition of an epicondyle
a bony protuberance superior to a condyle
definition of a head
a prominent rounded surface
definition of a line
a small crest
definition of a malleolus
a rounded process
definition of a process
a bony protuberance
what’s another name for a process?
an apophyseal
definition of a protuberance
an outgrowth from a bone
definition of a spine
a sharp protuberance
definition of a trochanter
a very large, blunt, irregular-shaped process
definition of a tubercle
a small, rounded process
definition of a tuberosity
a rough protuberance
meaning of abdominal
the abdomen
meaning of acromial
the shoulder
meaning of antebrachial
the forearm
meaning of axillary
the armpit
meaning of brachial
the arm
meaning of calcaneal
the heel
meaning of carpal
the wrist
meaning of cephalic
the head
meaning of cervical
the neck
meaning of coxal
the hip
meaning of digital/phalangeal
the fingers or toes
meaning of dorsal
the back, back of the hand, top of the foot
meaning of facial
the face
meaning of femoral
the thigh
meaning of fibular
external aspect of the lower leg
meaning of frontal
the forehead
meaning of gluteal
the buttocks
meaning of inguinal
the groin
meaning of lumbar
the lower back
meaning of mammary
the breast
meaning of nasal
the nose
meaning of occipital
back of the head
meaning of orbital
the eye
meaning of oral
the mouth
meaning of otic
the ear
meaning of palmar
inside of the hand
meaning of pectoral
the chest
meaning of pelvic
the pelvis
meaning of popliteal
back of the knee
meaning of plantar
sole of the foot
meaning of sacral
the sacrum
meaning of scapular
the scapula
meaning of sternal
the sternum
meaning of sural
the calf
meaning of tarsal
the ankle
meaning of umbilical
the navel
meaning of vertebral
the spine
meaning of zygomatic
the cheek
definition of smooth muscle
non-striated, involuntary muscles found within the walls of internal organs
definition of chondrocytes
mature cartilage cells
definition of hyalin cartilage
most abundant, recovers the surface of most joints and allows for flexibility, support, reduces friction & absorbs shock
definition of fibrocartilage
strongest & most durable type of cartilage to provide extra stability and support to a joint
definition of elastic cartilage
helps to maintain shape by providing strength & elasticity
what are the types of cartilage?
hyalin cartilage, fibrocartilage, & elastic cartilage
definition of avascular
doesn’t receive nutrients from blood supply
what are fibrous joints?
joints that allow little to no movement & are stabilized by thick connective tissue
definition of a suture
two bones joined by connective tissue found only in the skull & can only be completely an osseous joint
definition of syndesmosis
a small gap between the articulating bone with no cartilage
definition of gomphosis
a joint between a cone-shaped peg & a socket
what are the types of joints?
fibrous, cartilaginous, & synovial joints
definition of cartilaginous joints
contains no articular cavity & only allows small amounts of movement
definition of synchondrosis
bones linked together by hyalin cartilage
definition of symphysis
bones united via a fibrocartilaginous disc
definition of synovial joints
joints covered in hyalin cartilage & contains an articular cavity filled with synovial fluid
definition of synarthrosis
immovable joints
definition of amphiarthrosis
slightly moveable joints
definition of diarthrosis
freely moveable joints
definition of articular capsule
a sleeve-like structure around a synovial joint composed of a fibrous capsule and synovial membrane
definition of tendon sheaths
tube-shaped structures found in the surrounding of tendons most at risk of friction & are susceptible to traumatic and chronic injuries
what is tenosynovitis?
an injury to a tendon sheath
what are the types of synovial joints?
planar, hinge, ball-&-socket, pivot, condyloid, & saddle joints
definition of planar joints
allows gliding movements in one plane & don’t allow for angular motion
definition of hinge joints
allows movement around one axis of rotation, flexion, & extension
definition of pivot joints
allows for rotation along their longitudinal axis & are uniaxial
definition of condyloid joints
convex oval-shaped bony projection articulates with an oval-shaped depression or another bone & are biaxial
definition of saddle joints
a modified condyloid joint with a greater degree of freedom
definition of ball & socket joints
allows for movement in all planes & axes of movement
definition of a syssacose
a fake joint consisting of a gliding space between a bone & muscle or two muscles
what are the types of muscles?
smooth, cardiac, & skeletal
definition of cardiac muscle
striated & involuntary muscles found in the heart
definition of skeletal muscles
striated & voluntary muscle responsible for maintaining posture, balance, & stability; participates in thermoregulation
definition of electrical excitability
ability to respond to an action potential
definition of contractility
ability to forcefully contract when stimulated by an action potential
definition of extensibility
ability to be stretched without damage
definition of elasticity
ability to recover back to initial length after being contracted or stretched
types of fascia
superficial & deep fascia
definition of superficial fascia
connective tissue separating muscle from skin or fat
definition of deep fascia
layer of connective tissue that covers a group of muscles with similar functions
definition of epimysium
superficial layer of connective tissue used to recover an individual muscle
definition of perimysium
muscle composed of a bundle of muscle fibres & separated bundles from one another
definition of endomysium
deepest layer of connective tissue that surrounds individual muscle fibers
how many bones are in the adult human body?
206 bones
what are the two types of skeleton in the human body?
the axial & appendicular skeletons
how many bones are in the axial & appendicular skeleton?
axial: 80 bones
appendicular: 126 bones
what regions of the body make up the axial skeleton?
the head, neck, & trunk
what regions of the body make up the appendicular skeleton?
the upper & lower limbs/extremities
what are the 3 characteristics used to name muscles?
- muscle appearance
- muscle location
- muscle function/action
definition of prime movers/agonist muscles
main muscles responsible for producing a specific movement of the body
definition of antagonist muscles
muscles opposing the action fo prime movers
definition of synergists
muscles aiding the action of a prime mover
definition of origin
proximal end of the muscle that remains fixed during muscular contraction
definition of insertion
distal end of the muscle that is moveable
what does the term “chondral” mean?
cartilage