Multiple Choice
Which of the following is a primary function of the enteric nervous system?
106
views
14. The Autonomic Nervous System
Introduction to the Autonomic Nervous System
Struggling with Anatomy & Physiology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
What is the immediate concern for a patient who has suffered a spinal cord injury at the C3 level?
A
Respiratory failure due to diaphragm paralysis
B
Development of hypertension
C
Loss of lower limb reflexes only
D
Impaired digestion due to loss of parasympathetic input
Verified step by step guidance1
Understand the anatomy of the spinal cord: The C3 level refers to the third cervical vertebra in the spinal column. The spinal cord at this level is responsible for transmitting motor and sensory signals to and from the upper body, including the diaphragm, which is crucial for breathing.
Identify the role of the phrenic nerve: The phrenic nerve originates from the cervical spinal cord (C3-C5) and controls the diaphragm, the primary muscle involved in respiration. Damage at the C3 level can disrupt the phrenic nerve's function, leading to diaphragm paralysis.
Evaluate the consequences of diaphragm paralysis: Without a functioning diaphragm, the patient may experience respiratory failure, as the diaphragm is essential for drawing air into the lungs. This is an immediate and life-threatening concern.
Rule out other options: Development of hypertension, loss of lower limb reflexes, and impaired digestion are not directly caused by a C3 spinal cord injury. These symptoms are either unrelated or associated with injuries at different spinal levels or systems.
Conclude the primary concern: Based on the anatomy and physiology of the spinal cord and diaphragm, the immediate concern for a patient with a C3 spinal cord injury is respiratory failure due to diaphragm paralysis.
1:5mWatch next
Master Somatic vs. Autonomic Nervous System with a bite sized video explanation from Bruce Bryan
Start learningRelated Videos
Related Practice
Introduction to the Autonomic Nervous System practice set
Problem sets built by lead tutorsExpert video explanations