BASED ON THE VIDEO YOU HAVE WATCHED, ANSWER THE FOLLOWING:
1. Match each of the cells in column A with a function from column B.
Cells
Muscle cells ______
Nerve cells _______
White blood cells
__________
Red blood cells
__________
Epidermis cells
__________
Functions
a) Protect the body against germs and diseases
b) Contact and relax
c) Carry messages around the body
d) Carry oxygen
e) Provide an effective barrier against bacteria
and other harmful things
2. Indicate if the following statements are true (T) or false (F):
1) Similar cells are grouped together to form organs.
2) A group of bone cells forms muscle tissue.
3) The different types of cells have their specific shape adapted to their function.
4) The epidermis consists of only one layer of cells.
5) Epidermis cells and muscle cells are very similar in shape.
6) Each muscle cell contains many myofibrils that make it possible for these cells to
contract and expand.
7) Nerve cells are called also neurons.
8) The main parts of nerve cells are the body cells, the dendrites, and the axon.
9) Blood is a tissue made up of many different types of cells.
10) There are about 35 trillion red blood cells in an adult body, and each has a life span of
125 days.
3. How are cells in the human body grouped together?
4. Identify the following specialized cells:
5.
What are their unique features?
6. What do we mean when we talk about cell specialization?