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Human Body Systems

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Kim Arnold

on 24 February 2015

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Transcript of Human Body Systems

Human Body

The Nervous system

The skeletal system
Muscular system
The Cardiovascular system
The Respiratory system
The Human Respiratory system consists of many organs which are responsible for taking in oxygen and removing carbon dioxide.

The structure of the lungs consists of two balloon type air sacks which expand inwards and outwards when oxygen is inhaled/exhaled. There is both left and right lung which inclose the heart which sits behind the right lung which is slightly smaller.
The Endocrine system
The reproductive system
image 2
The Renal system
The Lymphatic System
Digestive System
The Cardiovascular system consists of the heart, blood vessels and blood.
It has three main functions, and these are:
Transporting nutrients, oxygen, and hormones
Protects the body by producing white blood cells and antibodies
Regulates body temperature

Pumps blood around the body
Lymph vessels
Lymph nodes

A lymph node is an organized collection of lymphoid tissue, which passes on its way back to the blood. This is found throughout the whole body.

The lymphatics are responsible for maintaining the balance of the body’s fluid.

The primary lymph organs
generate lymphocytes and immature progenitor cells.

Secondary lymph organs
(spleen and lymph nodes) maintain the body by circulating lymphocytes and search for thier specific antigen.
Mouth and Esophagus
; The mouth is where the food is chewed up into smaller pieces then swallowed down your esophagus to your stomach.
Pancreas and Salivary Glands
; These are what produce a digestive juice to help with mechanical breaking down and digestion.
The liver produces a substance called bile which helps to break down fat which prepares them for digestions.
Small + Large Intestine;
The small intestine digest and absorbs soluble food and absorb most of the nutrients from what we eat and drink. The large intestine absorbs water from wastes, creating stool.
The stomach is where the main digestion happens. Acids and enzymes helps with the digestion process in the stomach.

Glands that secrete hormones into the circulatory system. The glands are controlled directly by stimulation from the nervous system.

The endocrine glands include:
Pineal gland
Pituitary gland
Ovaries and testes
Thyroid gland
Parathyroid gland
Gastrointestinal tract
Adrenal glands
The renal system is a group of organs that produce, store and release urine. This includes the bladder, kidneys, uretha and ureters. The kidneys take the urine into the tubes known as the ureters to then exit the body. They help to regulate PH and blood pressure aswell as the balance of electrolytes such as potassium and sodium.
The next part is the bladder, this is shaped like a hollow balloon and is held inside the pelvic area of the body.
The human nervous system is divided into the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS in turn, is divided into the brain and the spinal cord which lie in the cranial cavity in the skull and the vertebral canal. The CNS and the PNS, acting in concert, integrate sensory information and control motor and cognitive functions.
It consists of the heart, the veins and the arteries
The Human Skeletal system has many key function such as:
Structure - the bones provide the support and strength we need to function.
Protection - the strength of our bones allows them to protect our internal organs such as the ribcage protecting our lungs and heart.
Movement - Without the support of our bones, we would be unable to move this is because our muscles are attached to our bones.
Storage - Our bones store fat and various other essential minerals.
Blood cell formation - Most of our blood components are made in the bones.
Every reaction in your body, such as breaking down food into energy, mood swings, physiological development, development of the reproductive system and are all carried out by certain chemicals called hormones.
This regulates metabolism, growth and development, tissue function, sexual function, reproduction, sleep and mood, as well as other functions.
there are 5 functions:
Movements of body parts
Stability and posture
Heat production
Help in Digestion
Normal Structure & Function of the Musculoskeletal System. A basic primer on bones, muscles, tendons, ligaments, nerves, and cartilages. The skeletal system includes the bones of the skeleton and the cartilages, ligaments, and other connective tissue that stabilize or connect the bones
The reproductive system is a group
of organs that work together to produce
The lymphatic system is responsible for removing interstitial fluid from tissues.

Transports leukocytes to and from lymph nodes to the bones.

Moves and transports fatty acids from the digestive systems.

The immune system is designed to defend you against millions of bacteria, viruses, toxins and parasites that would love to invade your body.
It does this by using a huge army of defender cells made up from white blood cells. These are called macrophages destroy germs as soon as they're detected. However if a viral infection take hold we fight back using more powerful white blood cells called T and B lymphocytes.
The female reproductive system includes the ovaries that produce the eggs (oocytes) which are for fertilisation and the ovaries also reproductive hormones, oestrogen and progesterone. Fallopain tubes, uterus, vagina, vulva, mamary glands and breasts.
The primary organs are the lungs which carry out an exchange of gasses we breathe. Red blood cells
collect and carry oxygen to certain parts of the body where it is needed.
The diaphragm, a muscle located below the lungs plays an important role in the inhaling process as it creates a vacuum that helps pull in air into the lungs.
The lungs also remove carbon dioxide from the body.

The primary job of muscle is to move the bones of the skeleton, but muscle also makes the heart beat and constitutes the walls of other important hollow organs.
there are three types of muscle tissue:
skeletal muscle- This type of muscle creates movement in the body.There are more than 600 skeletal muscles.
cardiac muscle-This makes up the walls of the heart and creates the steady, rhythmic pulsing that pumps blood through the body from signals from the brain.
smooth muscle- smooth muscle makes up the walls of hollow organs, respiratory passageways, and blood vessels.
The organs of the immune system are positioned throughout the body. They're called lymphoid organs because they're the home to lymphocytes, small white blood cells. Bone marrow is the ultimate source of blood cells.
The function of the digestive
system is digestion and absorption.
Digestion is the breakdown of
food into small molecules, which
are then absorbed into the body.
Neurones in the brain communicate via electrical impulses and neurotransmitters. The nervous system is a complex collection of nerves and specialized cells knows as neurons that transmit signals between different parts o0f the body.
The bladder has elastic walls to help it hold a higher capacity of waste products (urine). The bladder walls also allow it to strech to hold 600ml up to 800ml of urine. The kidneys prodce a hormone caled renin which regulates blood pressure, and the erythropietin helps to produce red blood cells.
The male reproductive system includes the scrotum, testes, spermatic ducts, sex glands, and penis. They work together to produce sperm which is needed in order to fertilis the eggs within the female body.
This system is a group of organs that stores, produces and releases urine.
Controls the concentration of different electrolytes in body fluid.
Retains normal PH of the blood.
Informative video
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