to gather, interpret, respond to, store, and retrieve information
Purpose of the Nervous System
the Central Nervous System (CNS) and the Peripheral Nervous System
Two Lesser Systems of the Nervous System
Brain and Spinal Cord
What are the two main organs of the CNS?
It receives information from sense organs, analyzes it,and indicates a response that is carried to the designated body part via the peripheral nervous system.
What is the purpose of the CNS?
It links the CNS to the rest of the body.
What is the function of the Peripheral Nervous System?
via Electrical Impulse
In what form does a neuron transmit information?
Autonomic Nervous System
What part of the nervous system controls your organs?
It sends signals to muscles that are voluntarily controlled.
What is the function of the Somatic Nervous System?
Red Blood Cells
Which blood cells bring oxygen and take carbon dioxide away?
Systemic Circulation and Pulmonary Circulation
What are the two main parts of the Circulatory System?
What is the main organ of the circulatory system?
What is the body’s main artery?
Which part of the Circulatory System brings carbon dioxide filled blood to the lungs?
The human heart is divided into how many chambers?
The left side of the heart performs what?
Which part of the Circulatory System disperses oxygen-rich blood throughout the body?
To transfer waste-filled blood from tissues into the Pulmonary Circulation
What is the job of Capillaries?
What organ removes carbon dioxide from the blood?
Circulatory and Respiratory
What two systems work together to add oxygen to the blood and remove carbon dioxide from the body?
What is the main organ of the Respiratory System?
It is warmed and moistened.
What happens to air when it passes through the nose and mouth?
What prevents food and liquids from getting into the lungs?
Air is passed from the trachea into the lungs through two large tubes called what?
What are tiny air sacs through which oxygen and carbon dioxide pass in and out of the bloodstream?
What process removes carbon dioxide from the body?
The diaphragm relaxes, causing the lungs to contract
How does exhalation occur?
What kinds of activities increase your heart rate?
The Skeletal System is made up of how many bones?
Skeletal and Muscular
Movement occurs when what two systems work together?
The Axial Skeleton and the Appendicular Skeleton
What are the two parts of the Skeletal System?
The Axial Skeleton
What provides protection for the body’s vital organs?
The Appendicular Skeleton
What consists of all the bones in the shoulders, arms, hands, pelvis, legs, and feet?
Skull, Spine, Ribs, and Sternum
What bones are part of the Axial Skeleton?
The Muscular System is composed of approximately how many skeletal muscles?
How are Skeletal Muscles controlled?
What muscles move without conscious control?
Cardiac and Smooth
What are the two types of Involuntary Muscles?
Skeletal and Smooth
Which muscles move when nerve impulses are sent from the CNS telling them to either contract or relax?
What system prepares food for absorption into the bloodstream?
What glands (located in the mouth) secrete enzymes which help prepare food for digestion in the stomach?
What seizes the food and forms it into small balls, which are pushed into the Esophagus?
What transports the “small balls” of food to the Stomach?
What organ mixes the food with powerful chemicals to further digestion and also functions as a storage tank until the food is passed through the next step in the process?
What secretes salts, acids, and enzymes, which continue the breakdown of proteins, fats, and carbohydrates?
Nutrients are absorbed into the bloodstream through small finger-like nodules on the wall of the Small Intestine called what?
The undigested substances are passed out of the body through what?
What are the main organs of the Excretory System?
What channels waste-filled blood to the Excretory System?
What organs remove excess water, salts, uric acids, and chemicals from the blood?
What stores the waste until it is ready to be expelled from the body?
What excretes excess salts and water?
What system regulates the body’s metabolism, growth, and the functions of the sexual organs?
The Endocrine System consists of glands that secrete what into the bloodstream?
What tell your bones and tissues to create more cells?
What system protects the internal organs from harmful bacteria, sunlight, and injury?
What is the inner layer of skin, which contains blood vessels, sweat glands, hair follicles, and nerve cells?
What is the outer layer of skin, which makes the body waterproof, gives it color, and helps to maintain hydration levels?
What system defends your body from any organisms that threaten the destruction of cells?
What are white blood cells that produce antibodies and attack cells that have been infected by a virus, stopping the spread of disease?
What circulate in the bloodstream, seeking out bacteria to destroy?
Within the Immune System, what is responsible for the removal of bacteria from the bloodstream?
What glands are attached to the lymphatic vessels, hold and distribute lymphocytes, and filter harmful bacteria which have been collected from the bloodstream?
What is the function of the male reproductive organ?
Receiver and Carrier
What is the function of the female reproductive organs?
When does human life begin?
What is the main organ of the female reproductive system?