BMS 300 exam 3
1. Which type of the following connective tissues are Dense regular connective tissue
tendons composed of?
2. A mutation in TnC decreases its capacity to bind Blocked
Ca2+. Consequently, which state of the thin fila-
ment does this mutant TnC promote?
3. Which ion has a higher intracellular concentra- K+
tion than extracellular?
4. The connective tissue surrounding a muscle bun- Perimysium
dle is referred to as _________
5. Arrival of the stimuli at the presynaptic cleft of Ligand-gated Na+
the motor neuron will release Acetylcholine to
activate _________ channels
6. Fish-hunting snails inject toxins into their victims Ligand-gated Na
that block acetylcholine receptors at theneuro-
muscular junction and cause muscle paralysis.
The toxin is mostly likely blocking _________chan-
nels
7. Crossbridges (XBs) Closed to open
permit the thin
filament to transition
from the
__________ _______
state
8. During rigor mortis, calcium will flood the thin SERCA pumps cannot function
filament because _______
, BMS 300 exam 3
9. A mutation that inactivates the myosin light chain Myosin will remain bound to actin
phosphatase enzyme will likely cause the follow-
ing in smooth muscles:
10. Which of the following is common to smooth and Gap junctions
cardiac muscles but not skeletal muscles?
11. Isotonic eccentric contraction occurs when you Lower a dumbbell by extending
_________ the arm
12. The _________ muscle is more sensitive to changes Cardiac; skeletal; ascending limb
in muscle length than the _________ muscle
because it functions in the __________ of the
force-length relationship.
13. A stimuli from the CNS is not required for _____ Force-length relationship
14. Glycogen would be used as a fuel by _________ Fast; Slow
fibers, whereas fats would be used as a fuel
by_________ fibers
15. Muscles with predominantly __________ fibers are Slow
most resistant to lactic acid buildup
16. _________ receives oxygenated blood Left atrium
17. As the heart __________, the __________ valves open, Relaxes left and right AV; aortic and
causing blood to flow into the left and right ven- pulmonary
tricles whereas the __________ valves close
18. The Ca2+ influx to balance the K+ efflux is respon- Depolarization of action potential,
sible for ______ plateau phase
19. HCN channels
1. Which type of the following connective tissues are Dense regular connective tissue
tendons composed of?
2. A mutation in TnC decreases its capacity to bind Blocked
Ca2+. Consequently, which state of the thin fila-
ment does this mutant TnC promote?
3. Which ion has a higher intracellular concentra- K+
tion than extracellular?
4. The connective tissue surrounding a muscle bun- Perimysium
dle is referred to as _________
5. Arrival of the stimuli at the presynaptic cleft of Ligand-gated Na+
the motor neuron will release Acetylcholine to
activate _________ channels
6. Fish-hunting snails inject toxins into their victims Ligand-gated Na
that block acetylcholine receptors at theneuro-
muscular junction and cause muscle paralysis.
The toxin is mostly likely blocking _________chan-
nels
7. Crossbridges (XBs) Closed to open
permit the thin
filament to transition
from the
__________ _______
state
8. During rigor mortis, calcium will flood the thin SERCA pumps cannot function
filament because _______
, BMS 300 exam 3
9. A mutation that inactivates the myosin light chain Myosin will remain bound to actin
phosphatase enzyme will likely cause the follow-
ing in smooth muscles:
10. Which of the following is common to smooth and Gap junctions
cardiac muscles but not skeletal muscles?
11. Isotonic eccentric contraction occurs when you Lower a dumbbell by extending
_________ the arm
12. The _________ muscle is more sensitive to changes Cardiac; skeletal; ascending limb
in muscle length than the _________ muscle
because it functions in the __________ of the
force-length relationship.
13. A stimuli from the CNS is not required for _____ Force-length relationship
14. Glycogen would be used as a fuel by _________ Fast; Slow
fibers, whereas fats would be used as a fuel
by_________ fibers
15. Muscles with predominantly __________ fibers are Slow
most resistant to lactic acid buildup
16. _________ receives oxygenated blood Left atrium
17. As the heart __________, the __________ valves open, Relaxes left and right AV; aortic and
causing blood to flow into the left and right ven- pulmonary
tricles whereas the __________ valves close
18. The Ca2+ influx to balance the K+ efflux is respon- Depolarization of action potential,
sible for ______ plateau phase
19. HCN channels
