Human anatomy

1. Human anatomy
The basics

2. Human cells
Cells in the human body number in the
trillions and come in all shapes and
sizes. These tiny structures are the
basic unit of living organisms. Cells
comprise tissues, tissues comprise
organs, organs form organ systems,
and organ systems work together in an
organism. There are hundreds of
different types of cells in the body and
the structure of a cell is perfectly
suited for the role it performs. Cells of
the digestive system, for instance, are
different in structure and function from
cells of the skeletal system. No matter
the differences, cells of the body
depend on one another, either directly
or indirectly, to keep the body
functioning as one unit. The following
are examples of different types of cells
in the body.

3. Human cells
Different cells have different jobs to
do. Each cell has a size and shape
that is suited to its job. Cells that do
the same job combine together to form
body tissue, such as muscle, skin, or
bone tissue. Groups of different types
of cells make up the organs in your
body, such as your heart, liver, or
lungs.

4. Organ/body
systems
The individual organs that comprise
organ systems work together
chemically and/or physically to perform
their common task. The 11 organ
systems of the human body, which are
also found in many other animals, are
the digestive, respiratory, circulatory,
skeletal, muscular, integumentary,
nervous, urinary, reproductive,
endocrine and lymphatic systems. The
lymphatic system is considered a
subdivision of the circulatory system
that does not transport blood, but
rather forms and transports the lymph
fluid which helps defend the body
against disease.

5. The body systems
You should be able to identify the
human body systems and give brief
description of each.
Please note that knowing these
systems and how they work together
will help us to format our patient care
forms in a systematic and universally
recognized way.

6. Digestive system

7. Nervous system

8. The
musculoskeletal
system

11. The Heart
circulatory system
In your own words describe briefly how
the heart works including the 4
valves.And the pathway of the blood.

12. The Heart
circulatory system
The heart wall is made up of three
layers: the inner endocardium, middle
myocardium and outer epicardium.
These are surrounded by a double-
membraned sac called the
pericardium.
Heart sounds

13. Electrical conductivity of the heart

14. The lungs
respiratory system
In your own words briefly describe how
the lungs and respiratory system work.

15. Quiz time
Label the Organs