Integrating Autonomic & Volitional Control (9/20b) [Biomedical Sciences 1] Flashcards
What does the BP tell you?
Tells you the pressure in your arteries when the heart is relaxing/contracting
What does systolic BP tell you?
tells you about contractility of the heart
What does diastolic BP tell you?
tells you how much pressure the blood applies against the walls of the arteries and how much peripheral resistance is in the arteries
What does the HR tell you?
It tells you how fast the heart is pumping blood
How is BP and HR controlled?
Sympathetic and parasympathetic control
How do we move?
Nervous system - brain coordinates the systems
Musculoskeletal (somatic)- muscles to do the work
Cardiorespiratory (autonomic)- lungs to supply oxygen
Metabolic (autonomic) - energy to do the movement
Parts of the CNS
Forebrain Midbrain Brain Stem Hindbrain Spinal cord
Parts of the Forebrain
Cerebral cortex + white matter
Basal ganglia
Diencephalon (thalamus + hypothalamus)
Parts of the Brain Stem
Midbrain
Pons
Medulla oblongata
Parts of the Hindbrain
Brain stem
Cerebellum
Parts of the Spinal Cord
Cervical
Thoracic
Lumbar
Sacral
Autonomic Nervous System (ANS)
part of the CNS
communicates with internal organs and glands
Sympathetic and Parasympathetic divisions (and enteric NS)
Sympathetic vs Parasympathetic Nervous Systems
Sympathetic (SyNS)- arousing, fight or flight, uses energy
Parasympathetic (PsNS)- calming, rest and digest, conserves energy
Sympathetic ganglia
lie close to the spinal column and supply virtually every tissue in the body
some tissues (EX: skeletal muscle) are regulated only indirectly through their arterial blood supply
Parasympathetic ganglia
found in close approximation with their targets, which don’t include skin or skeletal muscle