What system gives structure to the body and helps to protect the internal organs from damage?
skeletal system
_____ bring messages to and from the brain.
Nerves
This system is a collection of glands that produce hormones that regulate metabolism, growth and development, tissue function, sexual function, reproduction, sleep, and mood, among other things.
endocrine system
The ________ system is to eliminates waste from the body, regulates blood volume and blood pressure, controls levels of electrolytes and metabolites, and regulates blood pH. It consists of the kidneys, ureters, bladder, and the urethra.
urinary
This system involves the breakdown of food into smaller and smaller components, until they can be absorbed and assimilated into the body.
digestive
A major function of the ________ is to remove waste products and excess fluid from the body.
kidneys
This organ controls our thoughts, memory and speech, movement of the arms and legs, and the function of many organs within our body.
The brain
This system permits movement of the body, maintains posture and circulates blood throughout the body.
muscular
This organ pumps blood around your body, delivering oxygen and nutrients to your cells and removing waste products.
heart
The _________ system is a complex collection of nerves and specialized cells known as neurons that transmit signals between different parts of the body.
nervous
This organs' principle functions are to bring in air from the atmosphere and pass oxygen into the bloodstream.
lungs
The__________ system is a network consisting of blood, blood vessels, and the heart that supplies tissues in the body with oxygen and other nutrients, transports hormones, and removes unnecessary waste products.
circulatory
The system in the human body that enables us to breathe.
respiratory
This system helps rid the body of toxins, waste and other unwanted materials.
lymphatic
The _______ system is a system of sex organs within an organism which work together for the purpose of sexual reproduction.
reproductive