Short canal or passageway
Meatus
a depression on a bone surface
fossa
any of the minute tubes that form a network in bone and contain blood vessels.
Haversian canal
What is another name for freely movable joints?
diathrosis
location of a malleolus
ankle bone
how many phalanges are in each hand?
14
too much osteoclast and osteoblast activity causing bone deformity. incurable metabolic disease
osteitis deformans
elderly adults often appear to “grow shorter” with age… what part of the skeletal system is involved in this change?
vertebral column, disks flatten in between the vertebrae.
broken ends of the bone are jammed into each other
impacted fracture
one side of the bone is broken and the other is bent; most common in children
greenstick fracture
the bone has been twisted apart
spiral fracture
break occurs at angle across the bone
oblique fracture
location of the ethmoid bone
behind the eyes
where are the parietal bones located?
central side and upper back
scientific name for the knee cap
patella
skull bones are united by what structure?
suture
soft spot of an infants skull
anterior fontanel
creates the elbow, socket of the ulna
olecranon
two relatively flat bone surfaces slide over each other with little change in the joint angle
gliding joint
similar to condyloid joint, but deeper and allowing greater range of motion
saddle joint
what make up the shoulder girdle?
the clavicle and the scapula
inflammation of the joints
arthritis
bacteria infect a joint
septic arthritis
the socket of the hipbone, femur attaches
acetabulum
what bone contains the foramen magnum?
occipital bone
functions of the muscular system?
movement of skeleton, maintenance of posture, generation of heat.
fasicle
a bundle of structures, such as nerve or muscle fibers
what does the masseter muscle do?
closes jaw
what does the buccinator muscle do?
allows you to whistle, helps in eating
muscles that move the head?
sternocleidomastoid and partly trapezius
a muscle that moves a body part is called a
levator , producing upward movement
prime mover
flexion
_____ muscles perform, or help perform, the same set of joint motion as the agonists. _____ muscles act on movable joints
synergist
primary flexor of the forearms
brachialis
motor unit is made up of
a single neuron and all the muscle fibers it stimulates constitute
produced in the muscle tissues during strenuous exercise
lactic acid
no change in muscle length but increase in muscle tension
isometric contraction
stores oxygen
myoglobin
what movement does the hamstring muscle group help with?
flexes leg at knee; extends and rotates thigh at hip
what is the ion that binds to the troponin/ troponyosin complex?
calcium