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Medical conditions or situations that can cause spiked T waves on an electrocardiogram (ECG) include myocardial infarction (heart attack), myocarditis (inflammation of the heart muscle), hyperkalemia (high levels of potassium in the blood), and pericarditis (inflammation of the lining around the heart).

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6mo ago

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What are the characteristics and functions of white blood cells?

White blood cells are part of the immune system and help the body fight off infections and foreign invaders. They are produced in the bone marrow and can be categorized into different types, such as neutrophils, lymphocytes, monocytes, eosinophils, and basophils. White blood cells can recognize and destroy harmful substances like bacteria, viruses, and abnormal cells to protect the body from infections and diseases.


What is crenate?

Crenation is the contraction of a cell after exposure to a hypertonic solution, due to the loss of water through osmosis. The word is from the Latin "crenatus" meaning scalloped or notched, and is named for the scalloped-edged shape the cells take on when crenated.Crenation occurs because in a hypertonic environment, (that is, the cell has a lower concentration of solutes than the surrounding extracellular fluid), osmosis (the diffusion of water) causes a net movement of water out of the cell, causing the cytoplasm to decrease in its volume. As a result the cell shrinks and forms abnormal notchings around its edges.The effects of crenation are especially visible in red blood cells, or erythrocytes, as they become distorted in shape rather than maintaining the usual disc-like shape with the dimple that the blood cell normally has. Instead, the red blood cell looks as if it has legs extending from a smaller central area, like a spiked ball.


What moth has an orange spike?

This caterpillar is the larva of the Royal Walnut Moth, also known as the Regal Moth. The larva is not one for a timid person to suddenly discover. It has a scary, frightful appearance resembling a small dragon with up to five pairs of long, curving hornlike structures over the back of its thorax with the rest of the body covered with shorter spikes. The body color ranges from deep blue-green to tan with orange spikes tipped with black. Shorter spikes are black. Though very ferocious appearing, it is quite harmless to handle. They are enormous in size, being five to six inches long and nearly 3/4-inch in diameter. They feed for a period of 37 to 42 days on the leaves of hickory, walnut, butternut, pecan, ash, lilac, persimmon, sycamore, sumac and sweet gum. Larvae mature in late summer, wandering around searching for a place to burrow underground to pupate. Overwintering occurs in the pupal stage.


What does the term crenation mean in relation to RBC's?

Crenation is the contraction of a cell after exposure to a hypertonic solution, due to the loss of water through osmosis. The word is from the Latin "crenatus" meaning scalloped or notched, and is named for the scalloped-edged shape the cells take on when crenated.Crenation occurs because in a hypertonic environment, (that is, the cell has a lower concentration of solutes and, therefore, higher water potential than the surrounding extracellular fluid), osmosis (the diffusion of water) causes a net movement of water out of the cell, causing the cytoplasm to decrease in its volume. As a result the cell shrinks and forms abnormal notchings around its edges.The effects of crenation are especially visible in red blood cells, or erythrocytes, as they become distorted in shape rather than maintaining the usual disc-like shape with the dimple that the blood cell normally has. Instead, the red blood cell looks as if it has legs extending from a smaller central area, like a spiked ball.


Small sharp stabbing weapon?

The assassin weapon of choice for years that was small, easy to push in deep even for a weak woman, and easy to pull back out too, was an ice pick. They are rare to find today but they are strong enough to puncture bone and reach the brain or heart easily. The ice pick is built to rip apart large blocks of ice and is a very strong long spiked weapon capable of even penetrating body armor. The one drawback is that it makes a small hole so the person using it must be accurate in their attack or the person stabbed could live long enough to attack back. It is best for heart and brain stabs or if the attacker knows anatomy, major arteries or veins in the neck, arm, groin etc.