Answer:
What is a Sarcomere
Explanation:
A sarcomere is the basic structural and functional unit of skeletal muscle because it is the smallest portion of skeletal muscle capable of contracting. Each sarcomere extends from one Z disk to an adjacent Z disk.
Please allow me to know if my answer helped by clicking thank you, rating or brainly.
Thank you,
Miss Hawaii
Answer:
The correct answer will be option C- increase the surface area.
Explanation:
At the neuromuscular junctions, the axons of the motor-neurons become bulbous at terminals. These bulbous enlargements are known as the synaptic knobs. The synaptic knob is the bulbous enlargements of the axon present at the terminals. These knobs increase the volume of the axon terminals embedded with the ligand-gated channels and accumulation of neurotransmitters in vesicles.
The motor end plate is the region of the muscle fiber which is responsible for initiating the action potential in a muscle. The motor end plate becomes ruffled or shows small folds or clefts to increase the increased surface area for the neurotransmitter to act.
Thus, option C is the correct answer.
Dangers faced during natural circumstances
Answer:
While having a slight fluctuation in heart rate during sleep is normal, it is important to understand the causes of more noticeable spikes in your heart's number of beats per minute.
Explanation:
A common cause of a rising heart rate during sleep is a lack of oxygen, which is often brought on by obstructive sleep apnea
