Human Body Systems 1
The body system that is responsible for breaking down your food into usable nutrients.
The digestive system
The body system responsible for removing toxins and excess liquid from the body.
The excretory system
The body system responsible for bringing in oxygen and removing carbon dioxide.
The respiratory system
The body system that coordinates the body's actions and transmits signals to and from different parts of the body.
The nervous system
The body system that distributes oxygenated blood through the body.
The circulatory system
The process by which an organism's internal environment is kept stable in spite of changes in the external environment.
Homeostasis
The human heart has 4 chambers. What are their names?
Right atrium, right ventricle, left atrium, left ventricle.
Which part of the brain is responsible for controlling involuntary activities such as breathing and circulating blood?
The brain stem
How would the nervous system help maintain homeostasis when regulating body temperature?
Can sense and send signals when hot or cold
List the levels of organization in the human body from simplest to most complex.
cell --> tissue --> organ --> organ system
What is the name of the smallest blood vessels?
The process of physically breaking down food into smaller pieces (chewing) is known as what?
mechanical digestion
Which types of muscles are involuntary?
smooth and cardiac muscles
What is the sac-like structures surrounded by capillaries where oxygen and carbon dioxide are exchanged?
Alveoli
What is the hollow tube that connects the throat to the stomach?
Esophagus
What are the tubes that branch off from the end of the trachea and head to each of the lungs?
Bronchi
True or false: Veins are blood vessels that deliver oxygenated blood to the body and away from the heart.
False: arteries
True or false: The central nervous system consists of the brain and spinal cord.
True
True or false: Ureters in the excretory system filter blood and produce urine.
False: kidneys
The stomach is the organ in the digestive system where nutrients we eat are absorbed into the blood stream.
False: small intestines
What are the 2 main functions of the circulatory system?
1. Transports oxygen to cells
2. Removes carbon dioxide from cells
What is the main functions of the respiratory system?
1. The exchange of oxygen and carbon dioxide between the blood and the cells of the body
What are the 2 main functions of the digestive system?
1. Digest food into usable nutrients
2. Absorb nutrients into the blood stream
What are the 2 main functions of the excretory system?
1. Eliminate the waste products by creating and excreting urine
2. Remove toxins from the body
What do we call the chemicals that the glands of the endocrine system secrete?
hormones