STD – 6th SUB – SCIENCE 11.Organ Systems

Presented By -Panchal Amol

Points to study

11.Organ Systems

Introduction – Organs and organ system.The digestive system.Some organs of the digestive system and their functions.Respiratory system.

STD – 6th SUB – SCIENCE 11.Organ Systems

Presented By -Panchal Amol

Introduction – Organs and organ system

1. We can not say that single specific organ carries out a body function.

2. The function is carried out by number of organs working together .

3. Organ system – 1. A group of organs working together to carry out common body function is called Organ system.

2. Respiration, digestion , circulation, excretion and

reproduction are the common body function.

Functions are carried out by a number of organs working

together as a group.

ORGAN SYSTEM

• A group of organs working together to carry out a common bodily function is called an organ system.

Question time ?

• 1) What is digestion of food ?

The digestive system.

The group of organs working together to carry out common body function is called the digestive system.

Organs of the Alimentary Canal· Mouth· Pharynx· Esophagus· Stomach· Small intestine· Large intestine· Anus

Mouth

· Lips· Teeth· Tongue

Stomach

Slide 14.15a

· Located on the left side of the abdominal cavity

· Food enters at the cardioesophageal sphincter

Stomach

Stomach Functions

· Acts as a storage tank for food

· Site of food breakdown

· Chemical breakdown of protein begins

· Delivers chyme (processed food) to the small intestine

Chemical Digestion in the Small Intestine

Figure 14.6

Large Intestine

· Larger in diameter, but shorter than the small intestine

· Frames the internal abdomen

Large Intestine

Functions of the Large Intestine

· Absorption of water

· Eliminates indigestible food from the body as feces

· Does not participate in digestion of food

· Goblet cells produce mucus to act as a lubricant

Question Hour.

• Q1) Name some organ systems in the human body.

• Ans- Respiration, Digestion, Circulation,

• Q2) Where are salivary glands located?• Ans- Salivary glands located near throat and

the ears

STD – 6th SUB – SCIENCE 11.Organ Systems

Presented By -Panchal Amol

Respiratory system• Inhalation – Taking oxygen from the air inside the body.• Exhalation – To leaving out carbon dioxide from the body.• Breathing - Inhalation and exhalation togetherly called Breathing.*The nose, trachea, lungs, diaphragm the rib-cage are the parts of Respiratory system.

Oxygen CellHi I am O2 ,you can call

me oxygen, and I will be your guide today. I advise you keep all feet

and hands inside the ride at all times.

Respiratory Intro

You may be asking, what is the Respiratory system? Well, the Respiratory system is the system that helps you breath in and out, so oxygen (02) can be pumped through your body and carbon dioxide (CO2) can be removed from the blood stream. You must remember that the Respiratory system is made up of many different organs.

Welcome

Now we will begin our tour.

Welcome to…

MB

Nasal Cavity

Nose

Mouth

Bronchus

Bronchiole

Alveolus

Diaphragm

Throat

(pharynx)

Windpipe (Trachea)

Left lungs

Ribs

This is where it all begins. This is where the oxygen first

enters your body and also where Carbon Dioxide leaves.

The Nose and Mouth

The Nose and MouthWhen the air comes into your nose it gets

filtered by tiny hairs and it is moistened by the mucus that is in your nose.

Your sinuses also help out with your Respiratory System. They help to moisten

and heat the air that you breath.

Air can also get into your body through yourmouth/oral cavity but air is not filtered as

much when it enters in through your mouth.

Nose and Mouth Picture

Nasal Cavity

Nostril

Oral CavityPharynx

Here is a picture of your nasal and oral cavity.

The Pharynx and Trachea

Next we will head down to your pharynx(throat) and your trachea (windpipe).This is where the air passes from your nose to your bronchi tubes and lungs.

The Pharynx and Trachea

Your pharynx (throat) gathers air after it passes through your nose and then the air is passed down to

your trachea (windpipe). Your trachea is held open by “incomplete ringsof cartilage.” Without these rings your trachea might close off and air would not be able to get

to and from your lungs.

Pharynx

(Throat)

Mouth

Trachea

The Bronchi Tubes and Bronchiole

These bronchi tubes split up, like tree branches, and get smaller and smaller

inside your lungs.

The air flows past your bronchi tubesand into your bronchiole. These tubes

keep getting smaller and smaller until theyfinally end with small air sacs (called alveoli).

But we will go there later…

Alveoli and Bronchi Picture

Trachea

Bronchi Tubes

Bronchiole

Alveoli

Now we will head over to the alveoli and what happens when the

air finally makes it down there.

The Alveoli and Capillary Network

The Alveoli and Capillary NetworkYour alveoli are tiny air sacs

that fill up with air/oxygen when you breath in.

Your alveoli are surrounded bymany tiny blood vessels called

capillaries.

The walls of your alveoli (and capillaries) are so thin that the oxygen or carbon dioxide can

pass through them, traveling right into, orout of your blood stream.

Alveoli Picture

Here is a closeup picture ofyour Alveoli

and a Capillarysurrounding it.

Capillary

Red Blood Cell

Oxygen is picked up

Carbon Dioxide is dropped off

Wall of the air sac

Alveolus

Bronchiole

Respiratory Bronchiole

Alveolar Duct

Alveolar Sac

Capillaries

Cool pictures

Diagram of Diaphragm

Here is an experiment that you can try.

Respiratory Overview Review

CO2

JH

The Pharynx, or throat, is located where passages from the nose and mouth came together.

Air Passing over the mucus membrane of the nasal cavity is moistened, warmed, and filtered

Inside the lungs the Bronchi branch into small tubes called bronchioles

At the end of the bronchioles are bunches of alveoli, air sacs, arranged like grapes on a stem

Air enters the trachea, or wind pipe which leads to and from the lungs

The trachea divides into two tubes called bronchi

If one lobe is injured or diseased, the other lobes may be able to function normally