The Circulatory SystemMRS. J.A. FELICIANO

PARKWAY MIDDLE SCHOOL

© copyright 2014- all rights reserved www.cpalms.org

Quick LAB: Are you pulsating?

What is the pulse?

Find your pulse by using your index and middle fingers of your right hand and place them on your wrist at the base of your thumb in your left hand. You should feel your pulse.

What is causing this pulsating feeling?

How fast do you think it is traveling per minute?

What should be the normal range of your pulse?

Stand away from your desk with enough space around to do 5 minutes of exercise.

Find your pulse again by using your index and middle fingers of your right hand and place them on your wrist at the base of your thumb in your left hand.

Was there a change?

Use Human Body handout to fill in chart and answer questions.

Human Body Corporation: CLOZE ACTIVITY

Use the note-taking handout and fill in correct answers as it is discussed in this lesson.

Fill in Table of Content in the Science Interactive Notebook with today’s lesson.

Glue handout to Science Interactive Notebook.

Essential Question: What is the job of the circulatory system in the human body?

The Circulatory System

The circulatory system consists of the heart, blood vessels, and blood.

It brings essential materials to all cells of the body and carries away cell wastes.

The circulatory system delivers oxygen needed by the cells to release energy from sugar molecules and carries back carbon dioxide to the lungs, where it is eliminated when air is exhaled.

The Heart

The heart is a hollow muscular organ that pumps blood throughout the body.

The heart is about the size of your fist.

Each time the heart beats, it pushes blood through the it pushes blood through the network of arteries and veins called the cardiovascular system.

4 Chambers of the Heart

The heart has 2 sides (right and left) that are separated by a wall of muscle called the Septum Each side has 2 chambers (upper and lower)

Each upper chamber is called an atrium (receives blood that comes to the heart)

Each lower chamber is called a ventricle (pumps blood out of the heart)

Pacemaker cells – cells located in the right atrium that control the heart rate by electrical impulses.

Task: 30 minutes

Draw or glue diagram of the heart on the left side of your Science Interactive Notebook.

Color the different parts of the heart and label them.

Indicate with arrows the direction of blood flow.

Arteries, Capillaries and Veins

Arteries are blood vessels that carry blood away from the heart.

Capillaries are tiny vessels that exchange substances between blood and body cells.

Veins are blood vessels that carry blood back to the heart.

Blood flows from arteries to capillaries, and from capillaries to veins.

The aorta is the largest artery in the body.

4 Components of Blood

Plasma, the liquid part of blood.

Most materials carried in the blood travel in the plasma; nutrients like glucose, fats, vitamins, minerals and chemical messengers that direct body activities.

It also carries waste away from the cells.

Red blood cells carry oxygen from the lungs to the cells in the body.

White blood cells fight diseases.

It alerts the body when affected by organisms

Different White blood cells surrounds and kills invading organisms.

Platelets are cell fragments that form blood clots that help to repair the cells and body.

Why is it important for a person to have a healthy heart?

List 3 reasons for a healthy heart

List 2 conditions that affect the circulatory system

Can the human body live without any of the organs discussed in class today? Explain and support your answer with text evidence.

The Respiratory System

ESSENTIAL QUESTION: WHAT IS THE ROLE OF THE RESPIRATORY SYSTEM?

Lung capacity-

Activity 2: The students will find out what effects our lung capacity. The students will be divided into groups to evaluate the lung capacity using a lung capacitor or balloons based on different variables.

What is the function of the respiratory system?

The respiratory system moves air containing oxygen into your lungs and removes carbon dioxide and water from your body.

Parts of the Respiratory System

Nose - Air, containing oxygen, enters the body through the nose The nasal cavity contains hairs that protects the body

from air bourn particles. (Sneeze) Pharynx – the air passes into the pharynx, or throat. Trachea - It then passes into the trachea, or windpipe,

where tiny hair like extensions known as cilia sweep mucus up to the pharynx. (Cough)

Bronchi - Air then moves into the bronchi, which are passages to the lungs,

Lungs - the main organs of the respiratory system. Alveoli - the lungs consist of alveoli, which are tiny sacs

through which gases are exchanged with the blood.

Breathing

Breathing is controlled by rib muscles, and the diaphragm.

When you breathe, your rib muscles and the diaphragm muscle work together, causing air to move into or out of your lungs. This airflow leads to the exchange of gases that occurs in your lungs.

How does the circulatory system and the respiratory system work together to maintain homeostasis?

After air enters the alveolus, oxygen passes through the wall of the alveolus and then through the capillary wall into the blood.

Carbon dioxide and water pass from the blood into the alveolus.

This whole process is called gas exchange. Gas exchange is aided by the many

alveoli in the lungs.

Why is it important for a person to have a healthy Lungs?

List 3 reasons for healthy lungs

List 2 conditions that affect the respiratory system

Can the human body live without any of the organs discussed in class today? Explain and support your answer with text evidence.

What is the major organ of the Circulatory System?

What is the major organ of the Respiratory System?

How do the circulatory and respiratory systems work together to maintain homeostasis

Summative AssessmentQuick write: Reflection Each student is required to defend their answer in a narrative or illustration.