Download Human Anatomy

Human Anatomy
Body Systems
Skeletal System
• The human skeleton consists of both fused
and individual bones supported and
supplemented by ligaments, tendons, muscles
and cartilage. It serves as a scaffold which
supports organs, anchors muscles, and
protects organs such as the brain, lungs and
heart
Muscular System
• The muscular system is the largest system in
the body. Muscles are located in practically
every region of the human body.
• The muscular system is made up of tissues
that work with the skeletal system to control
movement of the human body.
Digestive System
• The digestive system is one of the most
complex systems of the body. The digestive
system is made up of organs that break down
food into vitamins, minerals, protein,
carbohydrates, and fats, which the body needs
for energy, growth, and repair.
Nervous System
• The nervous system is a network of specialized
cells that communicate information about an
organism’s surroundings and itself. It
processes this information and causes
reactions in other parts of the body. It is
composed of neurons and other specialized
cells called glial cells (plural form glia) that aid
in the function of the neurons.
Lymphatic System
• The lymphatic system filters fluid from around
cells. It is an important part of the immune
system. The lymphatic system consists of
organs, ducts, and nodes.
Endocrine System
• The endocrine system is made up of a group
of glands that produce the body's longdistance messengers, or hormones. The
endocrine system is instrumental in regulating
mood, growth and development, tissue
function, and metabolism, as well as sexual
function and reproductive processes.
Circulatory System
• The circulatory system is an organ system that
passes nutrients (such as amino acids and
electrolytes), gases, hormones, blood cells,
nitrogen waste products, etc. to and from cells in
the body to help fight diseases and help stabilize
body temperature and pH to maintain
homeostasis. This system may be seen strictly as
a blood distribution network, but some consider
the circulatory system as composed of the
cardiovascular system, which distributes blood,
and the lymphatic system, which distributes
lymph.
Urinary System
• The urinary system is the organ system that
produces, stores, and eliminates urine. In
humans it includes two kidneys, two ureters,
the bladder, the urethra, and the penis in
males.
Immune System
• The immune system is a network of cells,
tissues, and organs that work together to
defend the body against attacks by “foreign”
invaders.
Integumentary System
• The integumentary system is the organ system
that protects the body from damage, comprising
the skin and its appendages (including hair,
scales, and nails). The integumentary system has
a variety of functions; it may serve to waterproof,
cushion and protect the deeper tissues, excrete
wastes, regulate temperature and is the
attachment site for sensory receptors to detect
pain, sensation, pressure and temperature. In
humans the integumentary system additionally
provides vitamin D synthesis.
Respiratory System
• The respiratory system is a biological system
consisting of specific organs and structures
used for the process of respiration in an
organism. Respiration takes place in the
respiratory organs called lungs. The passage of
air into the lungs to supply the body with
oxygen is known as inhalation, and the
passage of air out of the lungs to expel carbon
dioxide is known as exhalation; this process is
collectively called breathing or ventilation.
Reproductive System
• The reproductive system is the system that
allows for the continuation of the human
species. This system is different in both males
and females.