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Questions and Answers
Which nerve is responsible for sensation in the skin of the medial leg and foot?
Which nerve is responsible for sensation in the skin of the medial leg and foot?
The fibular nerve controls the gluteus minimus muscle.
The fibular nerve controls the gluteus minimus muscle.
False
Which muscles are innervated by the sciatic nerve?
Which muscles are innervated by the sciatic nerve?
Semimembranosus, semitendinosus, adductor magnus
The _______ nerve supplies the skin of the anterior and lateral surfaces of the leg.
The _______ nerve supplies the skin of the anterior and lateral surfaces of the leg.
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Match the following nerves with their respective primary functions:
Match the following nerves with their respective primary functions:
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Which nerve is responsible for the extensor muscles of the arm and forearm?
Which nerve is responsible for the extensor muscles of the arm and forearm?
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The pectoral nerves are responsible for the sensory innervation of the skin over the inferior abdomen.
The pectoral nerves are responsible for the sensory innervation of the skin over the inferior abdomen.
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What does the ulnar nerve supply in terms of muscles?
What does the ulnar nerve supply in terms of muscles?
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The ______ nerve supplies the skin over the anterior, lateral, and posterior thigh.
The ______ nerve supplies the skin over the anterior, lateral, and posterior thigh.
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Match the following nerves to their functions:
Match the following nerves to their functions:
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Which nerve innervates the quadriceps femoris?
Which nerve innervates the quadriceps femoris?
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The iliohypogastric nerve innervates the skin over the buttocks.
The iliohypogastric nerve innervates the skin over the buttocks.
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What is the function of the lateral femoral cutaneous nerve?
What is the function of the lateral femoral cutaneous nerve?
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Which spinal nerve roots make up the Brachial Plexus?
Which spinal nerve roots make up the Brachial Plexus?
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The phrenic nerve is responsible for innervating the skin of the neck.
The phrenic nerve is responsible for innervating the skin of the neck.
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What are the spinal nerve roots that comprise the Sacral Plexus?
What are the spinal nerve roots that comprise the Sacral Plexus?
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The __________ nerve innervates the deltoid and teres minor muscles.
The __________ nerve innervates the deltoid and teres minor muscles.
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Match the following nerves with their distributions:
Match the following nerves with their distributions:
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Which nerve is responsible for sensation in the skin over the anterior lateral surface of the hand?
Which nerve is responsible for sensation in the skin over the anterior lateral surface of the hand?
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The lumbar plexus is formed by the spinal nerve roots from T12 to L4.
The lumbar plexus is formed by the spinal nerve roots from T12 to L4.
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Identify the spinal nerve roots that form the Cervical Plexus.
Identify the spinal nerve roots that form the Cervical Plexus.
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Study Notes
Peripheral Nerves and Plexuses
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Plexuses and Spinal Roots:
- Cervical Plexus: C1-C5
- Brachial Plexus: C5-T1 (also includes trunks and cords)
- Lumbar Plexus: T12-L4
- Sacral Plexus: L4-S4
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Nerve Names, Locations, and Distributions:
- Lesser Occipital Nerve: Skin of the neck, scalp, posterior and superior to the ear
- Phrenic Nerve: Diaphragm
- Supraclavicular Nerves: Skin of the neck and shoulder
- Greater Auricular Nerve: Skin over the posterior aspect of the ear and neck
- Axillary Nerve: Deltoid and teres minor muscles
- Median Nerve: Flexor muscles of the forearm (pronator quadratus, pronator teres, digital flexors), sensory from skin over the anterolateral surface of the hand
- Musculocutaneous Nerve: Flexor muscles of the arm, sensory from skin over lateral surface of the forearm (lateral antebrachial cutaneous nerve)
- Ulnar Nerve: Flexor carpi ulnaris, flexor digitorum profundus, adductor pollicis, small digital muscles; sensory from skin over medial surface of the hand
- Radial Nerve: Extensor muscles of the arm and forearm (triceps brachii, anconeus, extensor carpi radialis, extensor carpi ulnaris, brachioradialis); sensory from skin over posterolateral surface of the limb and radial half of the hand
- Pectoral Nerves (medial and lateral): Pectoralis muscles
- Thoracic Nerves: (not part of a plexus) External and internal oblique and transverse abdominis muscles; skin over the inferior abdomen and buttocks
- Iliohypogastric Nerve: Not detailed distribution provided
- Genitofemoral Nerve: Skin over anteromedial thigh and portions of external genitalia
- Lateral Femoral Cutaneous Nerve: Skin over anterior, lateral, and posterior thigh
- Femoral Nerve: Quadriceps femoris, sartorius, pectineus, and iliopsoas; skin of the anteromedial thigh, and medial surface of the leg and foot.
- Saphenous Nerve: Skin of medial leg and foot; hip and knee joints; superior gluteus minimus, gluteus medius, and tensor fasciae latae muscles.
- Gluteal Nerves (not specific): Gluteal muscles.
- Sciatic Nerve: (Inferior): gluteus maximus; semimembranosus, semitendinosus, and adductor magnus; branches into tibial and fibular nerves
- Tibial Nerve: Skin of posterior surface of the leg and sole of the foot; motor branches to muscles of the back of the thigh, leg, and foot.
- Fibular Nerve (common fibular or peroneal nerve): Skin of anterior and lateral surface of the leg and dorsum of the foot; motor branches to short head of biceps femoris, fibularis muscles, tibialis anterior, and extensor muscles of toes.
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Description
This quiz focuses on the anatomy of peripheral nerves and the major plexuses, including the cervical, brachial, lumbar, and sacral plexuses. Test your knowledge on the nerve names, their locations, and distributions throughout the body. Understanding these nerves is crucial for students of anatomy and medicine.
