Nervous System
2 parts of the Nervous System
- central
- peripheral
First line of defense
- skin
- mucous membranes
- secretions of the skin
Where is cardiac muscle located
the heart
What does respiration refer to?
Gas exchange
*uptake of O2 & release of CO2
What does a vein do?
Carries blood to the heart?
What is the synapse?
The process of sending a signal from a neurotransmitter one neuron to another
Second line of defense
- phagocytic white blood cells
- antimicrobial proteins
- inflammatory response
What do tendons do?
Connect muslces to bones
What does the respiration process equate to?
What does the circulatory system do?
Brings oxygen to cells, & pushes away CO2, & carries nutrients
What is action potential?
chemical (ion channel) signal down the n euron
third line of defense
- lymphocytes
- antibodies
How many muscles are in the body?
over 650
What is alveoli?
where gas exchange occurs
What are the types of blood cells?
ethocytes - red blood cell
leukocytes - white blood cells
What are the types of Neurons?
- sensory neurons
- interneurons
- motor neurons
Where do immune cells come from?
bone marrow
How much of your body weight is made up of skeletal muscles?
30-40%
Functions of the respiratory system
- provides O2
- eliminates CO2
- regulates ph
- capilarries
- arteries
- areteriotes
- venules
- veins
Steps
2. Vesicles fuse with the cell membrane
3. Neutrotransmitters are released
what are the locations of the immune system?
- skin
- lymph nodes
- respiratory system
- white blood cells
- spleen
- stomach and intestines
How does the muscular system help maintain homeostasis?
Generates heat that is distributed around the body
Flow of gas exchange in humans?
nasal cavity -> epiglottis -> larynx -> trachea (wind pipe) -> bronchus (separates trachea) -> bronchioles -> alveoli
What are the functions of the circulatory system?
- oxygen & carbon dioxide transport
- nutrient & waste transport
- temperature maintenance
- hormone circulation
- houses the immune cells