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What are gap junctions in cells?
They are connections between animal cells which connects the cytoplasm between the cells; in neurons, they are electrical synapses.
What are the similarities between cardiac and smooth muscle?
There are 3 types of muscle tissue: Skeletal (the muscle tissue on bones) Smooth (internal organ make-up) Cardiac (heart)
What is the problem with height weight tables?
The limitation of height-weight tables is that they do not distinguish between weight of human fatty tissue and weight of lean muscle tissue.
What are the similarities between muscle tissue and the blood?
soft cosine or ("soft" similarity)
What are some of the factors that make BMR different for one person snd another?
Basal metabolic rate (BMR) varies between individuals due to several factors, including age, gender, body composition, and genetics. Younger individuals typically have a higher BMR due to greater muscle mass and metabolic activity, while women generally have a lower BMR than men because of differences in body fat and muscle distribution. Additionally, individuals with more muscle mass tend to have a higher BMR, as muscle tissue burns more calories at rest compared to fat tissue. Lastly, hormonal levels and overall health can also influence BMR.
Does skeletal muscle have gap junctions?
No. It's the only type of muscle tissue that doesn't have gap junctions. Cardiac and smooth muscles have gap junctions.
Where would you expect to find numerous gap junctions in the muscular tissue?
You would expect to find numerous gap junctions in cardiac muscle tissue and certain types of smooth muscle tissue. In cardiac muscle, gap junctions facilitate the rapid propagation of electrical signals necessary for synchronized heart contractions. In smooth muscle, they enable coordinated contractions across muscle fibers, allowing for effective movement of substances through hollow organs. Gap junctions play a crucial role in cell-to-cell communication in these tissues.
How would the genetic inheritance of a gene producing abnormal gap junctions effect muscle tissue?
Abnormal gap junctions can impair the ability of muscle cells to communicate effectively, leading to coordination and contractility issues within the muscle tissue. This can result in weakened muscle function, muscle spasms, or even muscle degeneration over time.
Which tissue would likely contain large amounts of gap junctions?
Cardiac muscle tissue likely contains large amounts of gap junctions. These junctions facilitate direct communication between adjacent cardiac muscle cells, allowing for coordinated contraction of the heart. Gap junctions enable the rapid spread of electrical signals, essential for maintaining a synchronized heartbeat. Additionally, some smooth muscle tissues may also have significant gap junctions for similar reasons.
What type of muscle tissue is self-excitable pacemaker cells gap junctions limited sarcoplasmic reticulum?
The type of muscle tissue that features self-excitable pacemaker cells, gap junctions, and a limited sarcoplasmic reticulum is cardiac muscle tissue. Cardiac muscle is involuntary and has specialized cells that generate electrical impulses, allowing for coordinated contractions. The presence of gap junctions facilitates communication between cells, ensuring synchronized heartbeats.
Are all smooth muscle cells connected by gap junctions?
No, not all smooth muscle cells are connected by gap junctions. While many smooth muscle tissues, such as those in the gastrointestinal tract and blood vessels, do contain gap junctions that facilitate coordinated contractions, some smooth muscle cells may be isolated or only loosely connected. The presence and density of gap junctions can vary depending on the specific tissue and its functional requirements.
Adult cell types you might expect to have gap junctions include?
Neurons, cardiac muscle cells, and smooth muscle cells are adult cell types that typically have gap junctions. Gap junctions allow for direct electrical and chemical communication between neighboring cells, facilitating coordination and synchronization in tissue function.
Where would you expect to find numerous gap junctions in muscular tissue?
You would expect to find numerous gap junctions in cardiac muscle tissue, as they allow for rapid electrical communication between cells, coordinating the contraction of the heart.
What type of muscle tissue has a gap junction?
Cardiac muscle tissue has gap junctions to allow impulses to travel quickly though the tissue so the two atria can contract as one and the two ventricles can contract as one.
What type muscle cells are arranged in sheets or layers with adjacent muscle cells electrically connected by gap junctions and mechanically connected by dense bodies?
Smooth muscle cells are arranged in sheets or layers with adjacent cells connected by gap junctions and dense bodies. This allows for coordinated contraction and relaxation of muscle tissue.
What type of muscle tissue has neuromuscular junctions?
skeletal muscle
Allow spread of action potential between cardiac fibers?
Visceral Muscle Tissue or Visceral Smooth Tissue is a cardiac muscle. Its gap junctions allows actions that is likely to disseminate from one cell to another.
