Anatomy 1 test Flashcards
Directional terms
Body planes
- Sagittal (midsagittal)
- Transverse
- Frontal (coronal)
Central Nervous System
Brain and Spine
Peripheral Nervous System
The rest of the nerves
1. sensory division
2. motor divison
- somatic NS
- autonomic NS
- sympathetic
- parasympathetic
Parasympathetic NS
REST AND DIGEST
Fibers leave the spinal cord in the cranial and sacral regions
- leave straight from the spinal cord and top/bottom
- innervate the inner visceral organs
Sympathetic NS
FIGHT OR FLIGHT
Preganglionic nerves leave from all along the spinal
- fibers leave the spinal cord in the thoracic and lumbar region
- viceral abdominal organs
Neurotransmitters
Chemical messengers that the cell uses to make a decision
- released in the synapse
- either active of inhibit
- chemicals released at the synaptic cleft
EX- acetylcholine, norepinephrine, dopamine, etc.
Receptor location
Autonomic NS- effects
Eye- dilation or constriction
heart rate- increase or decrease
blood pressure- elevate or depress
gastrointestinal tract- increase activity or decrease activity
Blocking agents
Ach- released at the synapse in order to release the action potential at the effector organ
Effects of the ANS
- skeletal muscle is not an effector
- skeletal muscle are not directly innervated by the ANS
- fibers leave the spinal cord in the thoracic and lumbar regions (SNS)
- fiber leave the spinal cord in the cranial and sacral region (PNS)
- neurons reside inside the gastrointestinal tract (enteric NS)
Chemicals of the endocrine system
Hormones
Organs of the endocrine system
- hypothalamus
- pineal body
- pituitary gland
- parathyroid gland
- thyroid gland
- thymus
- adrenal gland
- pancreas
- ovaries
- testes
Hormonal characteristics
- regulatory system
- maintains homeostasis internally
- responds to help cope with environment changes
- growth and development
- reproduction
Thyroid hormone
control
- sleep.wake cycle
- anxiety
- tolerance
- appetite
- metabolism
- losing or gaining weight
Aldosterone
Regulates balances of sodium, potassium, and water
Eliminated by…
Epinephrine
Secretion- adrenal gland
Action- adrenaline
Glucagon
Binds to receptors on the pancreas