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What are bullet characteristics and why are they useful in matching a bullet to a gun?
The first characteristics are size, shape and weight of the bullet, since that will direct attention towards a given group of firearms- a bullet is about .357 inches in diameter we know was NOT fired from a .22 or a .45. Next are the marks engraved on the surface of the bullet by the rifling of the gun. Those marks, known as striations, can help narrow our search for the type of gun. The number of marks, and the direction and rate of twist are key. Finally the striations have microscopic marks. Those can be matched to the only gun that will produce identical striations.
What are the scratches left behind from glaciers called?
striations
What determines the pattern of marks on a bullet?
Marks, or striations on a bullet are made from the bullet running against the metal of the gun. The barrel of the gun determines whether the bullet curves to the left or right.
Do cardiac muscles have striations?
Yes they have Cross Striations
What do striations muscles look like?
Striations are light and dark bands on skeletal and caridac muscle fibers. Smooth muscle lacks striations
Can you give a sentence for the word striations?
The marble was smokey grey with black and white striations.
Which type of muscle doesn't have stripes?
The "stripes" in the muscle are called striations. Smooth muscle doesn't have the striations.
What is a Long scratch marks that are left behind as evidence of glaciers are called?
They are called striations.
Do smooth muscle cells lack striations?
Yes they do lack striations. They do not have striations because they do not have sarcomeres. Instead, smoothe muscle contracts as one unit through the use of electrical impulses.
Where can you locate stripping marks on fired bullet?
The stripes of the lands and grooves will be on the sides of the bullet. If the bullet is "stripping" through the rifling of the gun, the striations (proper name for the rifling marks) will be smeared.
Intercalated discs and striations suggest the presence of skeletal muscle?
Intercalated discs and striations suggest the presence of cardiac muscle. Only cardiac muscle has intercalated discs. Both skeletal and cardiac muscle have striations.
What is the function of cross-striations?
Cross-striations form cardiac muscle. The crossed formation makes the tissue and muscle stronger.
