Unit 5 notes on FLG 211. The notes are made using the lecture slides, textbook and extra information given by lecturers during class. I got a distinction using these notes. Thank you for your support. I hope you enjoy Physiology as much as I do. Good luck!
UNIT 5.1 & 5.2 – THE A UTONOMIC & SOMATIC MOTOR CONTROL
HOMEOSTATIC BALANCE
Dynamic balance between autonomic branches
The 2 divisions counterbalance
each other’s activity
DIVISIONS OF THE ANS
Sympathetic Parasympathetic
• Mobilizes the body during extreme situations • Performs maintenance activities and conserves body energy
• Exerts long-lasting, diffuse effects • Exerts short-lived, highly localized control
• During flight-or-fight mode • During rest-and-digest mode
Stimulatory Actions of Sympathetic Branch Actions of Parasympathetic Branch
Involves the E activities:
- Exercise Involves the D activities:
- Excitement - Digestion
- Emergency - Defecation
- Embarrassment - Diuresis
6. Decreased arterial diameter = Increase in blood pressure
AUTONOMIC CONTROL CENTRES
• Hypothalamus
➢ Water balance
➢ Temperature
➢ Hunger
• Pons
➢ Respiration
➢ Cardiac
➢ Vasoconstriction
• Medulla
➢ Respiration
MICAELA DE JAGER 70
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