Podcast
Questions and Answers
Which nerve is primarily responsible for innervating the deltoid and teres minor muscles?
Which nerve is primarily responsible for innervating the deltoid and teres minor muscles?
- Axillary Nerve (correct)
- Radial Nerve
- Musculocutaneous Nerve
- Median Nerve
What is the primary function of the phrenic nerve?
What is the primary function of the phrenic nerve?
- Innervates the abdominal muscles
- Innervates the flexor muscles of the forearm
- Innervates the diaphragm (correct)
- Innervates the skin of the lateral side of the thigh
Which nerve innervates the skin over the clavicle and shoulder?
Which nerve innervates the skin over the clavicle and shoulder?
- Radial Nerve
- Greater Auricular Nerve
- Lesser Occipital Nerve
- Supraclavicular Nerve (correct)
Which nerve is part of the lumbar plexus and innervates the quadriceps femoris muscle?
Which nerve is part of the lumbar plexus and innervates the quadriceps femoris muscle?
Which nerve is involved in innervating intrinsic muscles of the hand?
Which nerve is involved in innervating intrinsic muscles of the hand?
Flashcards
What are nerve plexuses?
What are nerve plexuses?
A network of nerves formed by the ventral rami of spinal nerves. They act as the communication link between the spinal cord and the body.
What is the Brachial Plexus formed by?
What is the Brachial Plexus formed by?
This plexus supplies motor and sensory innervation to the shoulder, arm, forearm, and hand.
What is the Phrenic nerve a part of?
What is the Phrenic nerve a part of?
The phrenic nerve controls the diaphragm, which is essential for breathing.
What does the Lateral Femoral Cutaneous Nerve innervate?
What does the Lateral Femoral Cutaneous Nerve innervate?
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What is the Sciatic nerve?
What is the Sciatic nerve?
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Study Notes
Nerve Plexuses
- Cervical plexus: C1-C4
- Brachial plexus: C5-T1
- Lumbar plexus: T12-L4 (L1-L4 acceptable)
- Sacral plexus: L4-S4
- Thoracic nerves do not form a plexus
Nerve List
- Lesser Occipital Nerve: Located in the neck, innervates the skin on the posterior and lateral aspects of the head.
- Phrenic Nerve: Located in the neck and thorax, innervates the diaphragm.
- Supraclavicular Nerve: Located in the neck, innervates the skin over the clavicle and shoulder.
- Greater Auricular Nerve: Located in the neck, innervates the skin over the ear.
- Axillary Nerve: Located in the shoulder, innervates the deltoid and teres minor muscles.
- Median Nerve: Located in the arm and forearm, innervates the flexor muscles of the forearm and hand.
- Musculocutaneous Nerve: Located in the arm, innervates the biceps brachii, brachialis, and coracobrachialis muscles.
- Ulnar Nerve: Located in the arm and forearm, innervates the flexor carpi ulnaris, flexor digitorum profundus (medial half), and intrinsic muscles of the hand.
- Radial Nerve: Located in the arm and forearm, innervates the extensor muscles of the arm and forearm.
- Ileo-hypogastric Nerve: Located in the abdomen, innervates the abdominal muscles.
- Genito-femoral Nerve: Located in the abdomen, innervates the skin of the genitalia and thigh.
- Lateral Femoral Cutaneous Nerve: Located in the thigh, innervates the skin on the lateral side of the thigh.
- Femoral Nerve: Located in the thigh, innervates the quadriceps femoris muscle and skin of the anterior thigh.
- Saphenous Nerve: Located in the thigh, innervates the skin of the medial side of the leg.
- Superior Gluteal Nerve: Located in the pelvis, innervates the gluteus medius and gluteus minimus muscles.
- Inferior Gluteal Nerve: Located in the pelvis, innervates the gluteus maximus muscle.
- Sciatic Nerve: Located in the pelvis, innervates the muscles of the posterior thigh and leg.
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