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Ch. 1 The Human Body: An Orientation
Marieb - Essentials of Human Anatomy & Physiology 13th Edition
Marieb13th EditionEssentials of Human Anatomy & PhysiologyISBN: 9780135624340Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoMarieb 13th EditionCh. 1 The Human Body: An OrientationProblema 16
Capitolo 1, Problema 16

Jennifer fell off her motorcycle and tore a nerve in her axillary region. She also tore ligaments in her cervical and scapular regions and broke the only bone of her right brachial region. Explain where each of her injuries is located.

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Step 1: Identify the axillary region. The axillary region refers to the area of the armpit. Jennifer's torn nerve is located in this region, which is anatomically significant for the brachial plexus—a network of nerves that supplies the upper limb.
Step 2: Identify the cervical region. The cervical region refers to the neck area. Jennifer's torn ligaments in this region could involve structures such as the cervical vertebrae or supporting ligaments of the neck, which are crucial for head and neck movement and stability.
Step 3: Identify the scapular region. The scapular region refers to the area surrounding the scapula, or shoulder blade. Torn ligaments in this region could affect the stability of the shoulder joint, which is supported by ligaments such as the coracoclavicular and acromioclavicular ligaments.
Step 4: Identify the brachial region. The brachial region refers to the upper arm. The only bone in this region is the humerus, which Jennifer broke. The humerus is a long bone that connects the shoulder to the elbow and plays a key role in arm movement.
Step 5: Summarize the injuries. Jennifer's injuries are located in the axillary (armpit), cervical (neck), scapular (shoulder blade), and brachial (upper arm) regions. Each injury involves different anatomical structures, including nerves, ligaments, and bones, which are essential for movement and stability in the upper body.

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Axillary Region

The axillary region, commonly known as the armpit, is the area located beneath the shoulder joint and above the upper arm. It contains important structures such as nerves, blood vessels, and lymph nodes. In Jennifer's case, the torn nerve in this region could affect the function and sensation of the shoulder and upper arm.
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Cervical Region

The cervical region refers to the neck area, consisting of the first seven vertebrae (C1-C7) and surrounding soft tissues. This region supports the head and allows for its movement. Ligament injuries in this area can lead to pain and restricted motion, impacting overall neck function and stability.
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Brachial Region

The brachial region pertains to the upper arm, specifically the area between the shoulder and the elbow. It includes the humerus bone and is crucial for arm movement. A fracture in this region, as experienced by Jennifer, can severely limit mobility and strength in the arm, affecting daily activities.
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