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anatomical characteristics of a synovial joint include
all of these (articular cartilage, a joint cavity, and an articular capsule)
factors that influence the stability of a synovial joint include
all of these (shape of articular surfaces, presence of strong reinforcing ligaments, tone of surrounding muscles)
the description "articular surfaces deep and secure; capsule heavily reinforced by ligaments and muscle tendons; extremely stable joint" best describes
the hip joint
an autoimmune disorder in which joints are affected bilaterally and which involves pannus formation and gradual joint immobilization is
the connective tissue covering that encloses the sarcolemma of an individual muscle fiber is called the
the function of the T tubules in muscle contraction is to
transmit the action potential deep into the muscle cells
the sites where the motor nerve impulse is transmitted from the nerve endings to the skeletal muscle cell membranes are the
a smooth, sustained contraction resulting from very rapid stimulation of the muscle, in which no evidence of relaxation is seen, is called
which does (do) not require that oxygen be available?
A) a coupled reaction of creatine phosphate with ADP and C) anaerobic glycolysis
myoglobin has a special function in muscle tissue. it
holds a reserve supply of oxygen in the muscle
aerobic exercise results in all of the following except
increased size and strength of exisiting muscle cells
the smooth muscle type found in the walls of digestive and urinary system organs and that exhibits gap junctions and pacemaker cells is
a muscle that assists an agonist by causing a like movement or by stabilizing a joint over which an agonist acts is
the arrangement of muscle fibers in which the fibers are arranged at an angle to a central longitudinal tendon is
the chewing muscles that protrude the mandible and produce side-to-side grinding movements are the
intrinsic muscles of the back that promote extension of the spine (or head) include all but
several muscles act to move and or stabilize the scapula. which of the following are small rectangular muscles that square the shoulders as they act together to retract the scapula?
in walkin which two lower limb muscles keep the forward swinging foot from dragging on the ground
gluteus medius and tibialis anterior
which of the following is a large deep muscle that protracts the scapula during punching
what type of current flows through the axolemma during steep phase of repolarization
chiefly a potassium current
assume that an EPSP is being generated on the dendritic membrane. which will occur
a single type of channel will open, permitting simultaneous flow of NA+ and K+
chemical synapses are characterized by all of the following except
ions flowing through protein channels from the presynaptic to the postsynaptic neuron
inhibition of acetylcholinesterase by poisoning blocks neurotransmission at the neuromuscular junction because
ACh is not degraded, hence prolonged depolarization is enforced on the postsynaptic cell
the anatomical region of a multipolar neuron that has the lowest threshold for generating an AP is the
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