WorksheetsQuiz 10 (Ch 8 and ch 9)
Total questions: 10
Worksheet time: 5mins
A ligamentous connection, such as that between the bones of the lower leg, is called a __________.
synostosis
synchondroses
symphysis
syndesmosis
A synovial joint is an example of a(n) __________.
amphiarthrosis
diarthrosis
synarthrosis
syndesmosis
An entire skeletal muscle is surrounded by
sarcolemma
tendon sheath
endomysium
epimysium
a motor neuron along with all the muscles fibers it supllies is called a(n)
synaptic cleft
motor end plate
motor unit
axon terminal
Which of the following muscle types is/are both voluntary and striated?
cardiac muscle only
skeletal muscel only
cardiac muscle and skeletal muscle
smooth muscle
Muscle cells initiate nerve impulses
True
False
The final "go" signal for skeletal muscle contraction is __________.
a decrease in extracellular calcium ion levels
an increase in extracellular calcium ion levels
an increase in intracellular calcium ion levels
a decrease in intracellular calcium ion levels
Acetylcholinesterase __________.
breaks down acetylcholine
helps acetylcholine bind to its receptor
activates acetylcholine
is another name for acetylcholine
When an action potential arrives at the neuromuscular junction, the most immediate result is __________.
the depolarization of the sarcolemma
a rise in intracellular Ca2+ levels in the muscle fiber
the release of acetylcholine from the motor neuron
the formation of actin-myosin cross bridges
What would occur if a contracting muscle became totally depleted of ATP?
The muscle would remain in a contracted state because of an inability to break actin-myosin cross bridges.
The muscle would relax and lengthen because of an inability to sustain actin-myosin cross bridges.
The muscle would exhibit isotonic contraction.
The muscle would exhibit isometric contraction.
