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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.
What are the Transitional periods of the zodiac called?
The transitional periods of the zodiac are called "cusp periods." These periods occur at the beginning and end of each astrological sign when the Sun is on the border between two signs. People born during these times may exhibit characteristics of both signs.
What term refers to rows of elements?
Rows of elements are typically referred to as periods in the periodic table of elements. Each period represents a horizontal row of elements that share similar properties and exhibit a trend in properties across the row.
What does epinephrine do to the blood vessels?
Sympathetic stimulation (I'm guessing you mean your bodie's reaction in fight or flight) makes the blood vessles tighten, or constrict, hightening blood pressure. This is bad for you over long periods of time.
Which color fibers are slow oxidative fibers?
Slow oxidative fibers are typically red in color due to their high myoglobin content, which gives them their oxidative capacity for sustained contractions over long periods of time.
I am experiencing lower abdominal pressure almost like braxton hicks contractions i am also a little bloated Periods not due for two more weeks could i be pregnant?
You do not have noticeable Braxton Hicks contractions until you are in your 2nd and 3rd trimesters. But no you probably aren't pregnant. You cant tell 2 weeks before your missed period that you are pregnant without the help of a pregnancy test.
What are the key differences between cardiac muscle and smooth muscle in terms of their structure and function?
Cardiac muscle is striated and found in the heart, while smooth muscle is non-striated and found in organs like the intestines. Cardiac muscle is involuntary and contracts rhythmically, while smooth muscle is also involuntary but contracts more slowly and for longer periods. Both types of muscle have different structures and functions that allow them to perform their specific roles in the body.
What is the medical term meaning built-in or intrinsic rhythm of heart contractions?
AutorhythmicityThe heart is made of tissue that is specific to the cardiac muscle. The beating of the heart, in most healthy individuals, intrinsically arises in the SA (sino atrial node) in the upper right chamber of the heart. A normal resting heart rate is commonly considered to be between 60 and 100 beats per minute. In some very well trained athletes or in periods of meditation a normal resting heart rate may be less than 60.
Pattern of evolution where a species is stable for a long time then rapidly changes?
Punctuated equilibrium is a model of evolution in which species exhibit long periods of stasis, where little change occurs, punctuated by brief periods of rapid change. This theory suggests that most evolutionary change happens over relatively short periods of time during events like speciation.
Is there an animal always awake night and day?
Yes, some animals like certain marine mammals, birds, and insects exhibit behaviors that allow them to be active around the clock without sleeping for extended periods. However, they still have periods of rest or reduced activity to conserve energy.
What characteristics does an abnormal exercise program have?
There is a possibility of exercise burnout if an exercise program is not varied and adequate rest periods are not taken between exercise sessions. Muscle, joint, and cardiac disorders have been noted among people who exercise.
Does daphnia sleep?
Yes, Daphnia, commonly known as water fleas, do exhibit sleep-like states. Research indicates that they experience periods of reduced activity and responsiveness, which resemble sleep in higher organisms. These rest periods are essential for their recovery and overall health, although the exact mechanisms and patterns of sleep in Daphnia differ from those in vertebrates.
