Question

5 Damage to which spinal nerve(s) might produce the following physical findings? a Inability to extend the forearm and hand b Inability to breathe C Inability to feel the skin over the anterolateral thigh d Inability to dorsiflex the foot She begins to feel numibness and 6 Marta is an editor and she spends a great deal of time typing on her computer She begins tingling in her anterior and lateral hands and weakness in the muscles of her forearmm nerve is likely involved in her problem, and what do you think has happened? Explain her symptoms that flex her hand. V Ce tter orange, also known as synephrine, mimics the effects of the neurotransmitters viscera and skin. What effect do you think of the SNS on the heart and blood vessels serving the abdominal this would have o hypertension (high blood pressure)? 7 The herbal supplement bi idering this, do you think this drug should be given to people with Once yo 1 Identify stru 2 Identify struc 14

Answer 1

5. Query : Damage to that spinal nerves may create the following physical findings:

A. Inability to expand the hand and forearm: Radial Nerve

Explanation: Radial nerve innervates the muscles of posterior arm, forearm, hand, thumbs and first two fingers. Consequently, its harm results in anability to stretch the hand and forearm

b. Inability to breathe: Intercostal nerve and Phrenic nerve

Explanation: Intercostal nerve serves the muscles of rib cage. While phrenic innervates the diaphragm. Damage to these nerves results in inability to breathe
C. Inability to feel the skin within the anterolateral region: Sural Nerve (Dermatome)
Dermatome is region of skin provided by spinal nerves, damage to dermatomes causes inability to sense that the skin within the antero lateral region
d. Inability to dorsiflex the foot: Tibial nerve
Explanation: It innervates the muscles of posterior subject of foot and leg. Damage of this nerve contributes to shuffled gait and inability to dorsiflex the foot

In the given case, since the topic is an editor she should have damaged her Carpal tunnel as a result of lengthy typing exercises by livelihood, which triggered excessive pressure on the median nerve due to narrowing of the carpal tunnel or inflammation of ligament and tendons compressing the median nerve.

6. At the specified condition median nerve is the most probable nerve which would have been affected and resulted in the signs. Median nerve supplies the muscles of forearm, muscles of hands.

Damage of the median nerve resulted in numbness, tingling in her lateral and posterior palms, weakness in the muscles of her forearm as these areas are innervated by Median Nerve

Even though there is vasodilatin of blood vessels partly by Beta 2 receptors the effect is moderate and there is just increase in blood pressure. Consequently, It Shouldn't Be given to the patients with hypertension and it is contraindicated in these patients

7. Synephrine is an adrenergic medication (sympathomimetic drug) which induces vasoconstriction in blood vessels (alpha1 and alpha 2), tachycardia, increased contractility(Beta1 receptor). So, there is increase in cardiac output which increases the blood pressure by vasoconstrition (increase in Periphereal vascular resistance) and increased cardiac output