cells of your body microviewer Flashcards
how is each specialized type of cell suited for the task it must do?
Each special kind of cell is suited to work by its shape, size and internal structure. When all the cells of the body coorporate by doing their jobs, the body is in good health.
How are cheek cells specialized to make the lining of the cheek smooth, flexible and strong?
The cheek lining cells are thin and flat. They fit together like tiles on a floor, except they overlap slightly. There are several layers of these cells. These characteristics are what makes the lining of the cheek smooth, flexible and strong.
What happens to cheek cells when we chew food?
The top layers of cheek cells are worn away. Those beneath them are pushed up to take their place.
What is the job of a red blood cell?
to carry oxygen from the lungs to other parts of the body
Name the chemical that makes it possible for a red blood cell to perform its job
hemoglobin
What is the job of a white blood cell?
keep our blood clean by destroying bacteria and other foreign particles that can cause infection or illness.
Name 2 places where lymph glands are found in your body
located in many part of the body, such as your neck and underarms
What is the job of a lymph cell?
similar jobs as white blood cells; destroy bacteria in the lymph nodes, just as the white blood cells destroy bacteria in the blood
What is the job of a bone cell?
manufactures a chemical that leaves the cell and hardens in the space between the cells; this chemical, which makes our bones strong, contain calcium and phosphorus, an important source for growing and strengthening bones
Why is it important to drink milk, according to many people?
since milk is rich in calcium and phosphorus, it is an important source for growing and strengthening bones
What is the difference between voluntary and involuntary muscle?
voluntary:
found in arm and leg muscles
contain many fibers which can shorten and pull with great force
any movements of your body, such as walking and jumping, are caused by the contraction, or shortening, of these cells
called voluntary muscle cells because they act when we wish them to
striated
involuntary:
shorter
located in many parts of our body (e.g. the walls of the swallowing tube, stomach and intestines have layers of the muscles which help us swallow and digest food we eat)
called involuntary muscle because their contractions are automatic and they work without having to think about then
they are not striated, they are referred to as “smooth” muscles
Why are both these muscle cells long and thing instead of being roundish like blood or cheek cells?
for contractions
Why do nerve cells have long branches projecting outward?
the ends of each branch make contact with other cells. Nerve cells are shaped like long wires so they can carry messages from one end of your body to the other.
What is the job of gland cells?
produce a substance which is secreted in the duct. This substance flows into the intestine where it mixes with food to help our digestion.
Each cell that you viewed is slightly different in shape and appearance. Why is each type of cell different?
Each cell serves a different purpose for different parts of the body, resulting in different shapes, purpose, appearance.
