Organ Systems 1
The gas that is absorbed into the blood by the respiratory system.
Oxygen
This body system transports nutrients, hormones gases and wastes in blood.
Circulatory system
Cell – ? – Organ – Organ system – Organism
Tissue
The gas that is removed from the blood by the respiratory system.
Carbon dioxide
How many bones are in the human body?
A.)306
B.)206
C.)106
D.)406
B.)206
This cell has a biconcave shape to increase the surface area for carrying oxygen.
Red blood cell
This body system adds oxygen to the blood and removes carbon dioxide from blood?
The respiratory system
The feature of alveoli and capillaries that allow gases and nutrients to pass through.
(BE SPECIFIC)
1 cell thick
Total number of chambers in the heart.
4
How many organs does the body have?
A.) 78
B.)206
C.)32
D.)96
A.)78
Pulmonary vein carries _____________ blood.
This body system breaks down food into units that can be absorbed by the body?
The digestive system
The process responsible for the movement of oxygen from the lungs into the bloodstream AND vice versa for carbon dioxide.
Gas exchange
The type(s) of digestion which occurs in the mouth.
Chemical and mechanical digestion
How many organ systems are there?
A.) 12
B.)32
C.)11
D.)106
C.)11
4 major nutrients humans need.
Carbohydrate, Protein, Fat, Vitamins + Minerals
Cells that have adapted their structure to perform a specific function are called this.
Specialised cell
True or False:
During exhalation, the diaphragm contracts and moves downward.
False
This valve has it's name because it is composed of three flaps (leaflets).
Tricuspid valve
What is the most useless organ?
A.)Heart
B.)Skin
C.)Brain
D.)Appendix
D.)Appendix
Oxygen pathway:
Nose – Pharynx - ? – Bronchi – Bronchioles – Alveoli
Trachea
This vessel carries de-oxygenated blood away from the heart.
Pulmonary artery
The difference between mechanical and chemical digestion.
Mechanical: is the physical breakdown of food into smaller pieces
Chemical: uses enzymes and acids to break food down
Insects breathe through small openings in their abdomen called _____________.
Spiracles
What is the largest organ?
The skin