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How does the contraction mechanism of smooth muscle compare to that of skeletal muscle and cardiac muscle?
Smooth muscle, skeletal muscle, and cardiac muscle all contract in response to signals from the nervous system or hormones. However, the contraction mechanism of smooth muscle is different from that of skeletal and cardiac muscle. Smooth muscle contracts more slowly and can sustain contractions for longer periods of time compared to skeletal and cardiac muscle. Additionally, smooth muscle does not have striations like skeletal and cardiac muscle, which gives it a more uniform appearance.
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How does the structure and function of cardiac muscle compare to skeletal muscle?
Cardiac muscle and skeletal muscle have some similarities in structure and function, but also key differences. Both types of muscle are striated, meaning they have a striped appearance under a microscope. However, cardiac muscle is involuntary and found only in the heart, while skeletal muscle is voluntary and attached to bones to help with movement. Cardiac muscle has intercalated discs that allow for rapid communication between cells, while skeletal muscle fibers are individual cells. Additionally, cardiac muscle has a longer contraction time and does not fatigue easily, while skeletal muscle can contract quickly and tires more easily.
How does facial reconstruction forensics aid in identifying unknown individuals in criminal investigations?
Facial reconstruction forensics helps identify unknown individuals in criminal investigations by creating a visual representation of a person's face based on skeletal remains. This can provide investigators with a likeness of the individual, which can be used to compare with missing persons reports or databases to potentially make a positive identification.
What statistical test should be used to compare the means of two groups: t test or chi-square?
A t-test should be used to compare the means of two groups, while a chi-square test is used to compare frequencies or proportions between groups.
Compare and contrast voluntary and involuntary muscles?
Involuntary muscles are muscles that you can't control. Such as the internal muscles. Involuntary muscles are the muscles that work by themselves without you personally doing anything to work them. Voluntary muscles are the muscles that you're in control with. An example of voluntary muscles would be when you sit down, or when you turn a page in a book. Voluntary muscles are muscles that you can control easier by yourself than with lots of help from your other muscles like you would need for your involuntary muscles. In short, the differences between the two are the fact that involuntary muscles are controlled without your help, and voluntary muscles work with your help because they are easier to work.
Which of the following do cladistic taxonomists not compare when hypothesizing evolutionary relationships among organisms?
Cladistic taxonomists do not usually compare similarities in overall resemblance or appearance when hypothesizing evolutionary relationships among organisms. Instead, they focus on shared derived characteristics, or synapomorphies, to determine evolutionary relationships.
How does the structure and function of cardiac muscle compare to skeletal muscle?
Cardiac muscle and skeletal muscle have some similarities in structure and function, but also key differences. Both types of muscle are striated, meaning they have a striped appearance under a microscope. However, cardiac muscle is involuntary and found only in the heart, while skeletal muscle is voluntary and attached to bones to help with movement. Cardiac muscle has intercalated discs that allow for rapid communication between cells, while skeletal muscle fibers are individual cells. Additionally, cardiac muscle has a longer contraction time and does not fatigue easily, while skeletal muscle can contract quickly and tires more easily.
Compare and contrast skeletal cardiac and smooth muscles?
Cardiac muscle uses aerobic respiration which is rich in myoglobulin, glycogen, and very large mitochondria that fills over 25% of the cell. Skeletal muscle only 2% of the cell. In turn makes cardiac muscle highly resistant to fatigue.
Compare and contrast the three types of muscle tissue Which type is most significant?
The three types are: smooth, cardiac, and skeletal. They are all significant, because if anyone of them fail to work, you die.
Compare the reaction time and rate of smooth and skeletal muscle.?
try wikipedia....
How does the ossa coxae compare in a fetal skeletal and adult skeletal?
The ossa coxae (containing the ililum, ishium, and pubic bones) are not fused in a fetal skeleton like in an adult human.
Distinguish between the three types of muscle tissue?
Skeletal (striated), smooth, and cardiac.UPDATED: Dec. 1, 2009The three types of muscles and four characteristics of each:1. SMOOTHa. What/where - GI track, vessels and ductsb. Appearance - smooth - not striated - no dark and light fibersc. Nucleus - single nucleus per fiberd. Function/movement - peristalsis2. CARDIACa. What/where - heartb. Appearance - striated/striped - light and dark fibersc. Nucleus - Multi-nuceli on connecting fibersd. Function/movement - t (twitch)3. SKELETAL / STRIATEDa. What/where - skeleton of voluntary musclesb. Appearance - striated/striped - dark and light fibersc. Nucleus - mulit-nuclei per fiberd. Function/movement - t & t (twitch & tetanus)Your heart
How do you confirm Poole-Frenkel type of conduction mechanism in a P-N junction?
you will find the coefficeint theoretically and then will compare with the experimental results, the one which is most nearest is the mechanism.
Compare and contrast the three types of muscles?
There are three types of muscle tissue found in the human body. There are visceral muscles, which consist of smooth muscle tissue, which is controlled by the autonomic nervous system and responds to both hormones and neural stimulation. Smooth muscles have no striations, as the nucleus is centrally located. Thus, they are involuntarily controlled. Then, there is cardiac muscle, which is only found in the heart and is also stimulated by neural activity and hormones. Lastly, there are skeletal muscles, which aid in the movement of the body and is mostly attached to bones by means of tendons. These muscles are striated, and are voluntarily controlled. Skeletal muscles can further be sub-divided into two categories: red and white muscles. Red skeletal muscle tissue consists of a chemical not found in the white skeletal muscle called myoglobin. Myoglobin is a protein-like molecule, which aids in the storage of oxygen, which is essential to its function. Thus, this extra molecule is responsible for giving red muscles their coloring.
How do you Compare your brain cell from heart cell?
cardiac cells are specialized muscle cells brain cells are nerve cells
What did deists compare the world to?
A clock or clockwork mechanism. There was a creator or "grand clockmaker" who set everything in motion but who did not feel it necessary to visit the items set in motion to see how they fared.
Compare and contrast in terms of structure and function the three different types of muscles found in the human body?
Well you only have 3 types of muscles in the human body. Cardiac, Skeletal and Smooth 1 Cardiac Muscle... with is only found in the heart. The specialized striated muscle tissue of the heart, the myocardium. Cardiac muscle is in some ways similar to skeletal and smooth muscle . For example, all three contract when a rise in calicum inside the muscle cell allows interaction between actin and myocin filaments. However, cardiac muscle has a unique structure, and differs in the way that contraction is initiated and regulated. 2.Skeletal Muscle... usually voluntary muscle made up of elongated, multinucleated, transversely striated muscle fibers, having principally bony attachments. Also called striated muscle. Skelekal muscles moves the skeleton and is responsible for all our voluntary movements, as well as for the automatic movements required, for example, to stand, to hold up our head, and to breathe. 2. Smooth Muscles... Muscle tissue that contracts without conscious control, having the form of thin layers or sheets made up of spindle-shaped, unstriated cells with single nuclei and found in the walls of the internal organs, such as the stomach, intestine, bladder, and blood vessels, EXCLUDING out side the heart. The cardiovascular, gastrointestinal, genitourinary, and respiratory systems are composed mostly of hollow organs (tubular or sacular), which transport and/or store fluids (either liquids or gases) within the body. The walls of these organs contain smooth muscle, a type of tissue which enables them to constrict or dilate, in this way retarding or facilitating fluid movement as required. This is accomplished by the shortening or lengthening of the individual smooth muscle cells, which occurs in a co-ordinated fashion because the cells are electrically coupled by intercellular connections, known as gap junctions. Other structures in the body that contain smooth muscle include the myometrium - the muscular wall of the uterus - which is responsible for the rhythmic contractions of Labor, the piloerector muscles, which cause skin hair to stand up; and the irises, which control the diameter of the pupils.
Why do emotions exist?
Emotions exist as adaptive responses that help us navigate our environment and make decisions. They can serve as signals for potential threats or rewards, help us communicate with others, and guide our behavior in various situations. Emotions play a crucial role in our survival and social interactions.
