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65 Cards in this Set

  • Front
  • Back
the strong tendon that joins the muscles in the posterior leg to the calcaneus
achilles tendon
a cellular protein found in myofilaments that is active in muscular contractions, cellular movement and maintenance of cell shape
actin myofilament
a change in electrical potential that occurs when a cell or tissue has been activated by a stimulus
action potential
the short muscle that adducts the thigh
adductor brevis
the long muscle that adducts the hip
adductor longus
the area within the pelvis that contains the anus
anal triangle
muscles working in opposition to each other
a condition caused by damage, either through trauma or infection, to the facial nerve, resulting in inability to move the facial muscles on the affected side
Bell's palsy
the large portion of the muscle between the origin and insertion
located in the posterior compartment of the leg, it flexes and laterally rotates the knee and extends the hip
biceps femoris
an intracellular protein that calcium binds to, resulting in muscle contraction
muscle that is found only in the heart, providing the contractions needed to propel he blood through the circulatory system
cardiac muscle
an anatomic space within the body that is enclosed by fascia
accumulation of blood or fluid in an anatomic compartment, typically following trauma, resulting in compression of blood vessels, and tissue damage secondary to ischemia and if not recognized and promptly treated, death of muscle and loss of limb
compartment syndrome
a flattened dome-shaped muscle that is the main muscle of breathing, located at the base of the thorax, separating the thorax from the abdomen
the delicate connective tissue surrounding individual muscular fibers
groups of muscles that cause extension
extensor muscles
fluid outside the cells
extracellular fluid
movement of the eyes in various directions
extraocular movements
a layer of fibrous connective tissue outside the epimysium that separates individual muscles
groups of muscles that cause flexion when contracted
flexor muscles
conduction areas between cells that interconnect individual muscle cells
gap junctions
an iron-containing pigment found in red blood cells, carries 97% of oxygen
the end of a muscle that is attached to the bone that is undergoing the greatest movement
branching fibers in cardiac muscle that allow action potentials to pass from cell to cell
intercalated disks
the ability of muscle to generate its own electrical activity
intrinsic automaticity
an organic acid that can lower the intracellular pH
lactic acid
specialized nerve cells that deliver an impulse to muscle cells, causing them to contract
motor neurons
one of two types of smooth muscle, it is formed into sheets of smooth muscle (as in walls of blood vessels), small bundles of muscles (as in the iris) or single cells (capsule of the spleen)
multiunit smooth muscle
fibers that contract causing movement, three types are present in the body
a bundle of skeletal muscle cells bound together by connective tissue and forming one of the constituent elements of muscle
muscle fasciculus
threadlike structures that extend from one end of the muscle fiber to the other
the individual protein filaments, composed of either actin or myosin, that make up a myofibril
an iron-containing red pigment, similar to hemoglobin that is found in muscle fibers
a fibrous globulin of muscle that reacts with actin to form actomyosin
myosin filaments
the junction between a motor neuron and a muscle fiber, one type of a synapse
neuromuscular junction
a chemical substance that transmits nerve impulses across a synapse
the attachment of a muscle to the more stationary of two bones
a temporary oxygen deficiency in muscles after strenuous exercise, characterized by heavy breathing until the muscles have been supplied with sufficient oxygen
oxygen debt
a deep muscle of the medial compartment that adducts, flexes, and internally rotates the thigh
pectineus muscle
the largest muscle of the chest wall, it adducts and internally rotates the shoulder
pectoralis major
the connective tissue sheath that surrounds a muscle and forms sheaths from the bundles of muscle fibers
the area below the coccygeus and levator ani muscles, which forms the floor of the pelvis
the proximal portion of the muscle fiber in the neuromuscular junction
postsynaptic terminal
the distal end of the nerve fiber in the neuromuscular junction
presynaptic terminal
the muscle in a group of muscles that has the major role in movement
prime mover
muscle contained in the anterior compartment of the thigh that extends the knee when contracted
quadriceps femoris
the linear muscle of the midline of the abdomen
rectus abdominis
a special group of four muscles that form a cap over the proximal humerus to the scapula, it controls the rotation of the shoulder
rotator cuff
the thin transparent sheath surrounding a striated muscle fiber
any of the repeating structural units of striated muscle fibers
a system of membranes that transport materials in muscle cells
sarcoplasmic reticulum
the longest muscle in the human body, it is located in the anterior compartment of the thigh and flexes both the hip and knee when it contracts
sartorius muscle
the muscle of respiration that elevate the first two ribs during inspiration
scalene muscles
striated muscles that are under direct volitional control of the brain, also called voluntary muscle
skeletal muscle
the movement of the myofilaments during contraction of the muscle
sliding filament mechanism
muscle that carries out much of the automatic work of the body, such as moving food through the digestive tract and dilating/constricting the pupils, also called involuntary muscle
smooth muscle
the space between nerves and muscles in the neuromuscular junction across which a nerve impulse is transmitted by a neurotransmitter
synaptic cleft
muscles that work together to accomplish a particular movement
tough, ropelike cords of fibrous tissue that attach muscles to bones
a test used to evaluate the integrity of the achilles tendon for possible rupture
Thompson's test
the region within the pelvis that contains the structures of the urogenital system
urogenital triangle
sheets of muscles found in the digestive, reproductive and urinary tracts
visceral smooth muscle
a layman's term for traumatic soft-tissue injury to the structures of the neck, associated with sudden flexion or extension
supination of the forearm against resistance to evaluate whether a patient has bicipital tendinitis
Yergason's test