Matter of the Heart
This is a muscular organ that has two halves and each half is divided into two chambers.
A. heart
B. lung
C. diaphragm
A. heart
This gives blood its color.
red blood cells
When we breathe out or exhale, we ____________ the respiratory muscles and the lungs become smaller.
A. contract
B. relax
C. flex
B. relax
The respiratory system has two main parts: the lungs and the __________ .
A. heart
B. diaphragm
C. respiratory tract
C. respiratory tract
TRUE or FALSE?
The heartbeat has three parts.
FALSE
The heartbeat has two parts:diastole and systole.
The heart is a muscular organ that has two halves. Each half is divided into two chambers: an atrium and a __________ .
A. tentacle
B. ventricle
C. icicle
B. ventricle
They stick together to stop bleeding.
platelets
The lungs expand and open up, allowing air to enter during the process of
A. inhalation.
B. exhalation.
C. the exchange of gases.
A. Inhalation
The interior of the mouth and the nasal cavity come together at the top of the ________ .
A. neck
B. lungs
C. head
B. lungs
TRUE or FALSE?
The lungs are large, hard organs.
FALSE
The lungs are large, spongy organs.
Blood is pushed around the body in a continuous movement called a ___________ .
A. high blood
B. respiration
C. hearbeat
C. hearbeat
This portect the body from infections.
white blood cells
____________ at the entrance to the nasal activity clean the air of dust and air warms to body temperature.
Hairs
The respiratory tract continues from the neck down to the chest. At this stage, it is made up of the __________ .
A. lungs and diaphragm.
B. nasal cavity and respiratory tract
C. pharynx, larynx, and the trachea
C. pharynx, larynx, and the trachea
TRUE or FALSE?
Two small tubes called bronchi connect the trachea to the heart.
FALSE
The bronchi connect the trachea to the lungs.
The left ventricle pumps blood containing carbon dioxide to the _________ .
A. ventricle
B. pulmonary artery
C. atrium
B. pulmonary artery
The red blood cells contain a red substance called ________ .
hemoglobin
The gases exchanged when we breathe.
oxygen and carbon dioxide
Within the lungs, the bronchi divide into smaller tubes called.
A. bronchioles
B. bronchitis
C. pipes
A. bronchioles
TRUE OR FALSE?
Arteries carry blood away from the heart and around the body and the veins carry blood towards the heart.
TRUE
What are the two parts to a heartbeat?
Diastole and Systole
Blood is made up of:
-
-
-
-
- plasma
- red blood cells
- white blood cells
- platelets
We breathe in by contracting the ____________ between the ribs and the diaphragm.
A. lungs
B. nasal cavity
C. intercostal muscles
C. intercostal muscles
The alveoli are surrounded by small blood vessels called ___________ .
A. white blood cells
B. platelets
C. capillaries
C. capillaries
TRUE or FALSE?
The left ventricle pumps blood containing oxygen to the pulmonary tract during systole.
FALSE
The left ventricle pumps blood containing carbon dioxide to the pulmonary tract during systole.