Chapter 4: Musculoskeletal System Flashcards
What are the organs of the skeletal system?
Bones of the skeleton
Joints
What are bones?
Body organs with blood supply, nerves, and lymphatic vessels that form a skeleton.
How many bones make a skeleton?
206
What is red bone marrow?
It is within the bones that produces blood cells
What is a joint?
The place where the 2 bones meet
What holds together the joints and bones?
Ligaments
What is another name for bones?
Osseous tissue
What is the process of bone formation before birth?
Ossification
What model forms a fetal skeleton?
Cartilage model
Flexible tissue is replaced by what?
Osteoblasts
What is another name for osteoblasts?
Immature bone cells
What do osteoblasts mature into?
Osteocytes
What are the 4 shapes of bones?
Long bones
Short bones
Flat bones
Irregular bones
What are 2 examples of a long bone?
Femur
Humerus
What are 2 examples of short bones?
Carpals
Tarsals
What are 3 examples of flat bones?
Sternum
Scapula
Pelvis
What is an example of an irregular bone?
Vertebrae
What majority of bone shape is the body?
Long bones
What are the 2 types of long bones?
Diaphysis
Epiphysis
What are the 6 functions of the skeletal system?
Internal framework of body Supports body Protects internal organs Point of attachment for muscles Produces blood cells Stores minerals
What is the medullary cavity?
It is an open canal within the diaphysis that contains yellow bone marrow.
What is yellow bone marrow?
mostly fat
What is the Epiphysis and where is it located?
It is at the wide end of a long bone and it is covered by the articular cartilage, which prevents the bones from rubbing together.
What is the periosteum?
It is a thin connective tissue membrane that contains numerous nerve and lymphatic vessels that covers the surface of bone where articular cartilage doesn’t cover.
What is the Compact bone and where can it be found?
The cortical bone outer layer of bone that is a very dense and hard. It can be found in both the epiphysis and diaphysis.
What is the cancellous bone and where can it be found?
Also known as the spongy bone, it is inside the bone and has spaces containing red bone marrow.
What is red bone marrow
it manufactures blood cells
Head
Large smooth ball-shaped end of a long bone
Condyle
Smooth rounded portion at end of bone
Epicondyle
Projection above or on a condyle
Trochanter
Larger rough process
Tubercle
Small rough process
Tuberosity
Large rough process
Sinus
Hollow cavity within bone
foramen
Smooth opening for nerves and blood vessels
fossa
Shallow cavity or depression within a bone
fissure
Deep grooves or slit-like opening
Identify the 2 divisions of a skeleton.
Axial Skeleton
Appendicular skeleton
What bones are in the Axial Skeleton?
Head Neck Spine Chest Trunk
What are the 2 parts of the skull?
Cranium
Facial Bone
What is the purpose of the skull?
Protects brain, eyes, ears, nasal cavity, and oral cavity.
Attachment for muscles of chewing and turning the head.
Frontal
Forehead
Parietal
Upper Sides and roof of skull
Temperal
Sides and base of skull
Ethmoid
Part of eye orbit, nose, and floor of skull
Sphenoid
Part of floor of skull
Occipital
Back and base of skull
Mandible
Lower jawbone
Maxilla
Upper jawbone
Zygomatic
Cheek bones
Vomer
Part of nasal septum
Palatine
Hard palate and floor of nose
nasal
part of nasal septum and bridge of nose
Lacrimal
Inner corner of eye
What is the Hyoid Bone?
U shaped bone
Attachment point for swallowing and speech muscles
where si the Hyoid located?
Between mandible and larynx
What are the 3 parts of the trunk?
Vertebral column
Sternum
Rib cage
What are the 5 sections of the Vertebral column?
Cervical Thoracic Lumbar Sacrum Coccyx
Where is the cervical and how many vertebrae?
Neck
7
Where is the thoracic and how many vertebrae?
Chest
12
Where is the lumbar and how many vertebrae?
Low back
5
Where is the Sacrum and how many vertebrae?
Base of spine
5 Fused
Where is the Coccyx and how many vertebrae?
Attached to Sacrum
3-5 small
How many pairs of rib are there?
12
Rib Cage
Attached to vertebral column at back.
What is the purpose of the rib cage?
Provides support for organs
True ribs
10 pairs attached to sternum in front
Floating ribs
Inferior 2 pairs with no attachment to front
What is the Appendicular Skeleton’s 4 divisions?
Pectoral Girdle
Upper Extremity
Pelvic Girdle
Lower Extremity
Pectoral Girdle
Attaches upper extremity to axial skeleton.
What does the Pectoral Girdle articulate with?
Sternum anteriorly
Vertebral Column posteriorly
What does the pectoral girdle consist of?
Clavicle
Scapula
Clavicle
Collar bone
Scapula
Shoulder bone
Upper Extremity
Arms
Humerus
upper arm
Ulna
part of forearm
radius
part of forearm
carpals
wrist bones
metacarpals
hand bones
phalanges
finger bones
What are 3 other names the Pelvic Girdle is known as?
os coxae
innominate bone
hipbone
Pelvic Gridle
Attaches lower extremity to axial skeleton
What does the pelvic girdle articulate with?
Sacrum posteriorly
What does the pelvic girdle consist of?
Ilium
Ischium
Pubis
Lower Extremity
Leg
Femur
thigh bone
patella
knee cap
tibia
shin bone
fibula
lower leg bone
tarsals
ankle bone
metatarsals
foot bones
phalanges
toe bones
What is another name for joints?
articulation
What are the 3 types of joints?
Synovial
Cartilaginous
Fibrous
Synovial Joints
Freely moving joints
Ball-and-socket joint
Ligaments
Strong bands of connective tissue that holds bones together
Bursa
Sac-like structure lined with synovial membrane
What so the most common joint?
Synovial joint
Joint capsule
Encloses synovial joints and contains synovial fluid.
Synovial Fluid
Lubricant secreted by synovial membrane
What are the end of bones covered with?
Articular Cartilge
What is cartilaginous joints?
Holds bones in place by solid piece of cartilage that allows slight movement
What is an example of a cartilaginous joint?
Pubic Symphysis
Fibrous Joint
Joined by thick fibrous tissue that allows almost no movement
What is an example of a fibrous joint?
Sutures of the skull
articular
pertaining to a joint
carpal
pertaining to the wrist
cervical
pertaining to the neck
clavicular
pertaining to the collar bone
coccygeal
pertaining to the tail bone
cortical
pertaining to the outer portion
costal
pertaining to the ribs
cranial
pertaining to the skull
femoral
pertaining to the femur
fibular
pertaining to the fibula
humeral
pertaining to the humerus
iliac
pertaining to the ilium
intervertebral
pertaining to between vertebrae
intracranial
pertaining to inside the skull
ischial
pertaining to the ischium
lumbar
pertaining to the low back
mandibular
pertaining to the lower jaw
maxillary
pertaining to the upper jaw
medullary
pertaining to the inner portion
metacarpal
pertaining to the hand
metatarsal
pertaining to the foot
Patellar
Pertaining to the knee cap
Pelvic
Pertaining to the pelvis
Phalangical
Pertaining to the fingers/toes
Pubic
Pertaining to the pubis
Radial
Pertaining to the radius
Sacral
Pertaining to the sacrum
scapular
pertaining to the shoulder blade
sternal
pertaining to the breast bone
synovial
pertaining to the synovial membrane
tarsal
pertaining to the ankle
thoracic
pertaining to the chest
tibial
pertaining to the tibia
ulnar
pertaining to the ulna
arthralgia
joint pain
bursitis
inflammation of the bursa
callus
mass of bone tissue that forms at fracture site during healing
chondromalacia
softening of the cartilage
crepitation
noise produced by bones or cartilage rubbing together
ostealgia
bone pain
oseomyelitis
inflammation of bone and bone marrow
synovitis
inflammation of synovial membrane
Closed Fracture
Fracture with no open skin wound; also called simple fracture
Colles’ Fracture
Common wrist fracture
comminuted fracture
fractured with an open skin wound; also called open fracture
Compression Fraction
Fracture with loss of height in vertebral body; often from osteoporosis
fracture
broken bone
FX, Fx
fracture
greenstick fracture
incomplete break; one side of bone is broken, the other is bent; common in children
impacted fracture
bone fragments are pushed into each other
oblique fracture
fracture at an angle to bone
pathologic fracture
fracture caused by diseased or weakened bone
spiral fracture
fracture line spiral around shaft of bone; often slower to heal
stress fracture
slight fracture caused by repetitive low-impact forces like running
transverse fracture
fracture is straight across bone
Chondroma
tumor in cartilage; usually benign
Ewing’s Sarcoma
Cancerous tumor of shaft of long bones; spreads through periosteum; amputation is necessary to prevent metastasis
Exostosis
Bone Spur
Myeloma
Tumor forming in bone marrow tissue
osteochondroma
tumor consisting of bone and cartilage tissue; usually benign
osteogenic sarcoma
most common type of bone cancer; begins in osteocytes
osteomalacia
softening of bones caused by calcium deficiency; caused in children with insufficient sunlight and Vitamin D
osteopathy
General term for bone disease
osteoporosis
decrease in bone mass; results in thinning and weakening of bones; porous bone easily fractures
Paget’s Disease
metabolic disease of bone; unknown cause; results in bone destruction and deformity
rickets
caused by calcium and vitamin D deficiency; results in bone deformities
ankylosing spondylitis
inflammatory condition resembles rheumatoid arthritis; gradual stiffening and fusion of vertebrae
herniated nucleus pulposus (HNP)
protusion of an intervertebral disk; also called ruptured disk
kyphosis
abnormal increase in curve of thoracic spine; humpback
lordosis
abnormal increase in forward curvature of lumbar spine; swayback
scoliosis
lateral curve of spine
spina bifida
congenital anomaly; vertebra fails to fully form around spinal cord
spinal stenosis
narrowing of spinal canal; causes pressure on spinal cord and nerves
spondylolisthesis
forward sliding of lumbar vertebra over vertebra over it
spondylosis
general term for degenerative vertebral column condition
whiplash
cervical muscle and ligament sprain
bunion
inflammation of bursa at base of great toe
dislocation
bones in joint are displaced from normal alignment
osteoarthritis (OA)
results in degeneration of bone and joints; bone rubs against bone
rheumatoid arthritis (RA)
autoimmune inflammation of joints with swelling, stiffness, pain; results in joint deformities
sprain
damage to ligaments around joint due to over stretching; no dislocation or fracture
subluxation
incomplete dislocation; joint alignment is disrupted, but ends of bones remain in contact
systemic lupus erythematosus (SLE)
autoimmune disease of connective tissue affecting many systems including joints; looks like rheumatoid arthritis
talipes
congenital deformity of ankle misalignment; clubfoot
arthrogram
x-ray record of a joint
arthrography
visualizing joint by x-ray after injecting contrast medium into joint
bone scan
nuclear medicine procedure; radioactive dye is used to visualize bones; useful for identifying stress fractures and metastases
dual-energy absorptiometry (DXA)
measures bone density using low dose x-ray; detects osteoporosis
myelography
study of spinal column after injecting opaque contrast medium; useful for identifying herniated nucleus pulposus
radiography
uses x-rays to study internal structure of body; especially useful for visualizing bones and joints
arthroscope
instrument used to view inside a joint
arthroscopy
examining interior of joint with an arthroscope, a fiberoptic camera; view of joint interior appears on monitor during procedure
arthrocentesis
insertion of needle into joint cavity to remove fluid
orthotic
brace or splint used to prevent or correct deformities
prosthesis
artificial device to substitute for a missing or damaged body part
amputation
removal of a limb
arthroclasia
forcibly break loose a fused joint
arthrodesis
stabilize join by fusing bones together
arthroscopic surgery
performing surgery while using an arthroscope to view inside joint
arthrotomy
cutting into a joint
bone graft
bone from another source used to replace boney defect in another location
bunionectomy
removal of bursa at base of great toe
bursectomy
removal of bursa
chondrectomy
removal of cartilage
chondroplasty
repair of cartilage
craniotomy
cutting into the skull
laminectomy
removal of posterior arch of vertebra to remove compression of a spinal nerve
osteoclasia
intentional breaking of a bone
osteotome
instrument used to cut bone
osteotomy
cutting into a bone
percutaneous diskectomy
tube is inserted into intervertebral disk to suck out ruptured disk; may also be done with a laser
spinal fusion
surgical immobilization of adjacent vertebrae
synovectomy
removal of a synovial membrane
total hip arthroplasty (THA)
implanting a prosthetic hip joint
total knee arthroplasty (TKA)
implanting a prosthetic knee joint
cast
solid material to immobilize a fracture; may be made of plaster of Paris or fiberglass
fixation
stabilizes fracture while it heals; external fixation fixation includes casts and splints; internal fixation includes pins, plates, and screws
reduction
realigning bone fragments of fracture; closed reduction is manipulation without surgery; open reduction requires surgery
traction
applying a pulling force on fracture or dislocation to restore alignment
bone reabsorption inhibitors
reduce the reabsorption of bone; treats osteoporosis and Paget’s disease
corticosteroids
have strong anti-inflammatory properties; treats rheumatoid arthritis
What is the function of the muscular system?
individual cells are able to contract or shorten in length that produces movement
What are the organs of the muscular system
muscles
What do muscle tissue fibers contract?
shorten in length produce movement move bones closer together push food through digestive system pump blood through blood vessels
What are the 3 types of muscles?
Skeletal
Smooth
Cardiac
Voluntary Muscles
Skeletal muscles that consciously choose to contract the muscle
Involuntary muscles
Smooth & cardiac muscles that are under control of subconscious brain
Skeletal Muscle
Attached to bones
Looks striped under microscope
Striated Muscle
Skeletal Muscle
Fascia
Skeletal muscles wrapped in layers of connective tissue
What are skeletal muscles stimulated by?
Motor neurons
Myoneural junction
Point of contact with muscle fiber
Where are skeletal muscles found?
Trunk, extremities, head, and neck
Where are visceral muscles found?
Viscera
Blood vessels
Where are cardiac muscles found?
Heart
What internal organs are smooth muscles associated with?
Stomach
Respiratory airways
Blood Vessels
Visceral Muscle
Smooth muscle.
Myocardium
cardiac muscle
Cardiac Muscle
makes up the walls of the heart
abduction
movement away from midline of body
adduction
movement toward midline of body
flexion
act of bending or being bent
extension
brings limb into a straight condition
dorsiflexion
backward bending of foot
plantar flexion
bending sole of foot; pointing toes
eversion
turning outward
inversion
turning inward
pronation
turning palm downward
supination
turning palm upward
elevation
to raise
depression
to drop down
Circumduction
Movement in circular direction from a central point
Opposition
Moving thumb away from palm to contact tip of other fingers
Rotation
Moving around a central axis
fascial
pertaining to fascia
muscular
pertaining to muscles
myocardial
pertaining to heart muscle
skeletal
pertaining to the skeleton
tendonous
pertaining to tendons
adhesion
scar tissue in fascia; makes muscle movement difficult
atrophy
poor muscle development; result of muscle disease or lack of use; muscle wasting
bradykinesia
having slow movements
contracture
abnormal shortening of muscle fibers, tendons, or fascia
dyskinesia
having difficulty or painful movements
dystonia
having abnormal muscle tone
hyperkinesia
having an excessive amount of movement
hypertonia
having excessive muscle tone
hypokinesia
having insufficient amount of movement
hypotonia
having insufficient muscle tone
intermittent claudication
attacks of severe pain and lameness caused by muscle ischemia; usually in calf muscles
myalgia
mucle pain
myasthenia
muscle weakness
myotonia
muscle tone
spasm
sudden, involuntary, strong muscle contraction
tenodynia
tendon pain
fascitis
inflammation of fascia
fibromyalgia
widespread aching and pain in muscles and soft tissue
lateral epicondylitis
inflammation of elbow muscles; caused by strong gripping; tennis elbow
muscular dystrophy (MD)
inherited disease with progressive muscle atrophy
myopathy
muscle diease
myorrhexis
tearing a muscle
polymyositis
inflammation of 2 or more muscles
pseudohypertrophic muscular dystrophy
inherited muscular dystrophy
torticollis
severe neck spasms pulling head to one side; wryneck or crick in neck
carpal tunnel syndrome (CTS)
repetitive motion disorder; compression of finger tendons and median nerve as they pass through carpal tunnel of the wrist
Ganglion Cyst
Cyst on tendon sheath; usually on hand wrist, or ankle
Repetitive Motion Disorder
Chronic disorders involving tendon, muscles, joints, and nerve damage; tissue is subjected to pressure, vibration, or repetitive movements
rotator cuff injury
joint capsule of shoulder joints is reinforced by tendons; high degree of flexibility puts rotator cuff at risk for strain and tearing
Strain
damage to muscle, tendons, or ligaments due to overuse or overstretching
tendinitis
inflammation of a tendon