Logo
search
menuicon
Kuiz peta premium
Dikunci (pelan tamat)
thubnail
Hutan AjaibPro
Perlawanan berpasukan
Universiti
Sains
Neuromuscular Junction
MASPAITILLA MA
27
Masalah tambahan (13/ 20)
Allow incorrect answer
Sembunyikan jawapan
public kuiz

# 1

pilihan

During muscle contraction, what role does calcium play?

  • It binds to actin to initiate contraction
  • It binds to troponin complex, allowing myosin head to bind to actin
  • It provides energy for muscle contraction
  • It breaks down ATP

# 2

jawapan pendek

What is the primary neurotransmitter released at the neuromuscular junction?

  • Acetylcholine

  • acetylcholine

# 3

pilihan

What is the function of the enzyme acetylcholinesterase at the neuromuscular junction?

  • Synthesize acetylcholine
  • Break down acetylcholine
  • Convert ATP to ADP
  • Bind to nicotinic receptors

# 4

pilihan

What is the role of calcium ions at the neuromuscular junction?

  • Initiate action potential
  • Facilitate acetylcholine release
  • Break down neurotransmitters
  • Bind to muscle fibers

# 5

pilihan

Which structure in the muscle fiber is responsible for propagating the action potential?

  • Myofibril
  • Sarcoplasmic reticulum
  • T-tubule
  • Mitochondria

# 6

pilihan

What is the synaptic cleft?

  • The gap between two neurons
  • The gap between neuron and muscle fiber
  • The space within the neuron
  • The gap between muscle fibers

# 7

pilihan

Which ion channel opens in response to the action potential in the presynaptic neuron at the neuromuscular junction?

  • Potassium
  • Sodium
  • Calcium
  • Chloride

# 8

jawapan pendek

Which enzyme breaks down acetylcholine in the synaptic cleft?

  • Acetylcholinesterase

  • acetylcholinesterase

# 9

pilihan

What structure in the muscle cell receives the signal from the motor neuron?

  • Sarcoplasmic reticulum
  • Myofibril
  • Motor end plate
  • T-tubule

# 10

pilihan

Which ion channel opens first when an action potential reaches the neuromuscular junction?

  • Voltage-gated Potassium channels
  • Voltage-gated Calcium channels
  • Voltage-gated Sodium channels
  • Ligand-gated Ion channels

# 11

pilihan

What is the primary function of the neuromuscular junction?

  • Sensory signal transmission
  • Chemical digestion
  • Signal transmission from nerve to muscle
  • Blood filtration

# 12

jawapan pendek

Which ion is crucial for triggering the release of acetylcholine into the synaptic cleft?

  • Calcium

# 13

jawapan pendek

What is the gap called between the nerve ending and the muscle fiber at the neuromuscular junction?

  • Synaptic cleft

Google Classroom Share