The 3 main parts:
Plasmatic or cell membrane. Covers the cell.
Controls what goes in and out of the cell.
Cytoplasm. It houses all the organelles. It´s a
Nucleus. Contains the genetic information,
controls the activity of the cells.
Points of the cellular theory
Authors: Matthias Schleiden (botanist) and
Theodor Schwann (zoologist)
All living things are made up of cells.
The cell is the functional and structural unit of
all living things
All cells come from pre-existing cells by division
Cells contain hereditary information which is
passed from cell to cell during cell division.
Animations cells, levels of organization
Video cell´s discovery
Video introduction to cells
Plasmatic or cell membrane
Covers the cell
Controls what goes in and what goes out of the
The cell membrane is made up of
two types of molecules: proteins and lipids
It is a jelly-like substance inside the cell.
It contains organelles. And proteins that form
It is surrounded by a nuclear membrane.
It contains the DNA, the genetic material.
It controls all the cell function´s.
The main organelles are:
Endoplasmic reticulum (rough and smooth)
1- Covering EPITHELIAL
Your skin is
tissue also lines
your body cavities
and major organs.
1.1-Covering epithelial tissue.
Where can we find it?
Epidermis. The outer layer of the skin.
Mucosae. Covering the pharynx, mouth,
esophagus, respiratory tract…
Covering the inside part of the blood vessels.
1.2- GLANDULAR EPITHELIUM
It´s the tissue that forms the glands
What are glands? Do you know any
Glands secrete substances
There are 3 types of glands:
used by the body,
Adrenaline is secreted by
the suprarrenal glands.
Strong emotions such as
fear or anger cause it to be
released into the
It causes an increase in
heart rate, muscle strength,
blood pressure, and sugar
3- Mixed glands
They can work both as endocrine or exocrine
As endocrine gland it produces:
As exocrine gland it produces:
2.5- Blood tissue
3- MUSCLE TISSUE
Muscles can be divided into three
main groups according to their
Smooth muscle tissue.
( Tejido muscular liso)
Skeletal muscle tissue.
(Tejido muscular estriado)
Cardiac (heart) muscle tissue.
(Tejido muscular cardíaco)
A neuron consists of two major parts:
Body. It contains the neuron's nucleus,
associated cytoplasm, and other organelles.
projections from the cell body
that are able to conduct and transmit signals.
There are two types:
Axons - carry signals away from the cell body.
Dendrites - typically carry signals towards the