0
When a muscle is relaxed the level of Ca ions in the cell is what?
Wiki User
∙ 9y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What chemical binds to the muscle cell memebrane causing a temporary rush of what into the muscle cell?
Sodium ions
The ions that enter the muscle cell during action potential generation are?
cacium ions
After ACh attaches to its receptors at the neuromuscular junction the next step is?
the depolarization of the muscle cell. This occurs when the ACh receptors open, allowing sodium ions to enter the muscle cell, which leads to the generation of an action potential. The action potential then propagates along the muscle cell, initiating contraction.
What is the purpose of the sarcomere?
To contract when calcium ions are released into the muscle cell cytoplams.
What ions enter the muscle cell during action potential generation?
sodium and potassium
In relaxed muscle fiber which structure stores calcium?
It is the Terminal Cisternae- Sac like regions of the sarcoplasmic reticulum that serve as specialized resevoirs of calcium ions
What is similar to ER but collects and stores calcium ions in a resting muscle cell?
sarcoplasmic reticulum (SR)
What are the ions whose blood level is critical for the proper functioning of the cardiac muscle?
I think that would be the electrolytes.
Are there more sodium ions inside or outside a cardiac muscle cell during the resting membrane potential?
Outside
Three types of pathways often induced by calcium ions?
1) Muscle Cell Contractions 2) Secretion of Certain Substances 3) Cell Division
What period is characterized by calcium ions release into cytosol and depolarization of the sarcolemma and T tubules?
The period that would be characterized by those things would be muscle contraction. Calcium ions are the neurotransmitters that cause contraction. Calcium Ions depolarize the cell and are spread through out the muscle via the T tubules.
What does the Smooth ER do to keep the cell running?
The Smooth Endoplasmic Reticulum (SER) is involved in lipid metabolism, drug detoxification, and calcium storage. It helps maintain cellular functions by synthesizing lipids, such as steroids and phospholipids, and by detoxifying harmful substances through enzymatic reactions. Additionally, the SER plays a role in regulating calcium levels within the cell, which is important for various cellular processes.
