Wednesday Flashcards
Antagonist
Chemicals that inhibit or oppose the actions of neurotransmitters.
- Often sit in receptor sites and block the neurotransmitter from binding with the receptors on the dendrites
Nervous System
The nervous system is the major controlling, regulatory, and communicating system in the body.
- The center of all mental activity including thought, learning, and memory.
Autonomic Nervous System
Regulates involuntary and unconscious actions
-Breathing, blood pumping, digestion, etc.
-Can be overridden but are involuntary for the most part
Sympathetic Nervous System
Emergency response system, if something alarms, enrages or changes you
-“Fight, Flight, or Freeze”
- Slows digestion, cools you down with perspiration, dumps glucose by raising blood sugar, etc.
Reflex Arc
Signal is sent from a sensory organ to the spinal cord, which processes the information instead of passing it on to the brain
Parasympathetic Nervous System
Functions to calm the person “Rest & Digest”
- Reduces body arousal, energy, decreases blood sugar, slows down blood flow, etc
Somatic Nervous System
Includes the nerves that transmit signals from your rain to the skeletal muscles to allow voluntary movement
Central Nervous System (CNS)
Coordinates the actions and interactions of the brain & spinal cord, body’s main control system
-Largest part of the nervous system
-The spinal cord is an information highway connecting the peripheral nervous system to the brain
Endocrine System
Sends its signals by passing hormones through the bloodstream.
The Peripheral Nervous System (PNS)
Includes the sensory nerves outside of the brain and spinal cord that connect the CNS to the rest of the body
- PNS connects the CNS to the organs, limbs, and skin
Hormones
Hormones are chemical messengers that coordinate different functions in your body.
Corticoids
Any of a class of steroids occurring in nature; a product of the adrenal cortex. I.e. Aldosterone, hydrocortisone, cortison.
Melatonin
The sleep hormone.
Pituitary Gland
The pituitary gland regulates stress, growth, and reproduction, including some parts of pregnancy and childbirth. The pituitary gland regulates stress, growth, and reproduction, including the testes, ovaries, and thyroid gland, which then release their own hormones.
Lesion
Tissue damaged from surgery.
