Video Questionsyep write down the whole sentence please

So what does Bill Nye say about our heart…hope you are listening

1. The Lub is the ____ push, and the Dub is _________ push

2. Blood vessels near the heart are _____ like _______.

3. A capillary is like a ________, while cells are like ________.

4. Our blood brings nutrients and ______ to every cell

The following video describes how your blood works

BLOOD AND CIRCULATION

Ch. 17

So what is the circulatory system? Circulate - to move

continuously or freely through a closed system or area

The heart/bloodstream supply cells with the nutrients and oxygen they need to stay alive, in what is called THE CIRCULATORY SYSTEM

Circulate?

So does blood just go everywhere inside our bodies? No… Humans and other

animals have closed circulatory systems, meaning that the blood is contained within a system of vessels.

These are called BLOOD VESSELS, as they provide a closed network of blood to our body

What are the 3 types of blood vessels called? As blood flows

through the circulatory system, it moves through three types of blood vessels: arteries capillaries veins

The biggest blood vessel…

Large vessels that carry blood AWAY from the heart to the tissues of the body are called ARTERIES.

Almost all arteries carry oxygen-rich blood.

Arteries have thick walls.

The biggest artery in our body is the AORTA

The smallest blood vessel…

The smallest of the blood vessels are the CAPILLARIES.

Their walls are only one cell thick, and most are narrow.

The capillaries bring nutrients and oxygen to the tissues and help remove carbon dioxide and other waste.

Back to the heart…

Blood vessels that carry blood back TOWARD the heart are VEINS.

Veins have thinner walls than arteries.

The walls of veins contain connective tissue and smooth muscle.

The biggest vein in our body is the VENA CAVA

“Ven Aca”

BodyHeart OxygenRed Blood Cells Arteries/VeinsBlood Vessels (Arteriole)CapillariesThe Cell

Picture time…The LAX Airport

1) Your body is a city. And the airport is your heart.

2) Airplanes bring in passengers just as your lungs bring in molecules such as oxygen.

3) Once arriving at the airport, taxi cabs (red blood cells) pick up passengers at the baggage claim area and drive them to where they want to go in the city.

4) The arteries/veins act as the roads. These carry many red blood cells throughout the body. The biggest of these arteries is the aorta, which is like 110 South.

5) The exits/streets are known as arterioles, as they are smaller transport systems.

6) Finally, the passengers arrive at the driveway of their homes (capillaries) where they are dropped off.

7) The house is the cell, and oxygen is dropped off in order for the body to function.

8) The taxi cabs then pick up passengers who will leave the city (carbon dioxide), and they go right back to the airport by venules, and the vena cava.

Now, I want you to fill in the blank diagram… Body -

Heart - Oxygen - Red Blood Cells - Arteries (Aorta) – Veins (Vena Cava) - Blood Vessels (Arteriole) - Capillaries - The Cell - Carbon Dioxide -

So what color is our blood?

So what color is our blood? Blue ? Red ? Both ? Write down what color you think your

blood is, and explain why you think that…

Blue blood?

Answer: So its really only dark red (no oxygen present) or bright red (with oxygen present)

NOT BLUE!!!! EVER.. Our skins just bends

light to make it look blue…

Pretty cool huh?

But what the heck is blood?!?

Okay… So we know the color but…

Section 37-2

Figure 37-7 Blood

Whole Blood Sample

Red blood cells

White blood cells

Platelets

Plasma

Sample Placed in Centrifuge Blood Sample That Has Been Centrifuged

Section 37-2

Figure 37-7 Blood

Whole Blood Sample

Red blood cells

White blood cells

Platelets

Plasma

Sample Placed in Centrifuge Blood Sample That Has Been Centrifuged

Section 37-2

Blood Composition

Whole Blood Sample

Red blood cells

White blood cells

Platelets

Plasma

Sample Placed in Centrifuge Blood Sample That Has Been Centrifuged

Plasma makes up about 55% of the total blood volume

It is mostly water (90% by volume)

But also contains dissolved proteins, glucose, blood clotting factors, minerals, hormones and carbon dioxide (about 10%)

So what is plasma then?

How about Red Blood Cells?

Red blood cells are also called erythrocytes (Eh-Rith-roh-sites)

They transport oxygen They get their red color from

HEMOGLOBIN This is an iron containing protein that

binds to oxygen in the lungs RBC’s are made in the bone marrow

(space inside our bones) and the liver

So RBC’s carry oxygen… What are the smallest

blood vessels called where blood is delivered to cells?

Capillaries! Are the capillaries thick or

thin? Thin! RBC’s travel in a single file

line Through diffusion (the

movement of stuff) oxygen enters a cell…

How does Oxygen get into cells?

THE RESPIRATORY SYSTEMPhysiology – Week 1

What is respiration?

To respire means to breathe (in O2, out CO2)

Therefore THE RESPIRATORY SYSTEM deals with the act of breathing Or the exchanging of oxygen and carbon

dioxide The main organs of the respiratory

system are: The lungs!!! Duh…

Flowchart

Movement of Oxygen and Carbon Dioxide In and Out of the

Respiratory System

Oxygen and carbon dioxide exchange at

alveoli

Oxygen from the air

Bronchioles

Mouth/NosePharynx (throat)

Trachea (windpipe)

Bronchi

Respiration…steps

Larynx (Voice Box)

Alveoli

Mouth

Nose

PharynxLarynxTracheaLung

Bronchus

Bronchioles

Edge ofpleural membrane

Diaphragm

Epiglottis

Capillaries

Alveoli

Bronchiole

Section 37-3

Figure 37-14 The Respiratory System

Alveoli

Bronchiole

Capillary

Alveoli: tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place.

DRAW THIS…

Gas exchange…

Air inhaled

Diaphragm

Rib cage rises

Air exhaled

Diaphragm

Rib cage descends

Inhalation Exhalation

Section 37-3

Figure 37-16 The Mechanics of Breathing

The act of breathing…

Air inhaled

Diaphragm

Rib cage rises

Air exhaled

Diaphragm

Rib cage descends

Inhalation Exhalation

Section 37-3

Figure 37-16 The Mechanics of Breathing

The act of breathing…

Intro To The Nervous System

If you think of the brain as a central computer that controls all the functions of your body, then the NERVOUS SYSTEM is like a network that relays messages back and forth from it to different parts of the body.

It does this via the spinal cord, which runs from the brain down through the back and contains threadlike nerves that branch out to every organ and body part.

Brain and Senses

Your brain ....1) Controls your body.2) Receives messages from your eyes,

ears, tongue, nose, and skin

Your spinal cord…3) Reflexes are quick responses that

cause your body to react before the brain gets involved

4) Receives messages from your skin (heat, pain, etc)

Reaction Time

GOAL - The goal of this experiment is to introduce students to the neurotransmission of messages while testing reaction time.

This experiment demonstrates how gravity can react on the reaction time of the nervous system.

Procedure

Procedure

Section 37-2

What are platelets?

Break in Capillary Wall

Blood vessels injured.

Clumping of Platelets

Platelets clump at the site and release thromboplastin. Thromboplastin converts prothrombin into thrombin..

Clot Forms

Thrombin converts fibrinogen into fibrin, which causes a clot. The clot prevents further loss of blood..