4. 6. Ligamentum nuchae 5. Longissimus capitis Platysma Semispinalis capitis Splenius capitis Trapezius

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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### Understanding Neck and Upper Back Muscles

This educational resource provides a detailed view of the muscles located in the neck and upper back region, specifically focusing on the longissimus capitis muscle and its neighboring muscles.

#### Muscle Overview

- **Longissimus Capitis**
  - This muscle is located laterally and slightly anterior to the semispinalis capitis. It acts synergistically with the splenius capitis, contributing to movements involving the head and neck. 

#### Diagrams and Details

The visual content includes three distinct images, labeled A, B, and C, which highlight the anatomical structure and placement of these muscles.

- **Diagram A**
  - A lateral view of the neck and upper back muscles.
  - Number 1: Longissimus capitis
  - Number 2: Platysma, a superficial muscle of the neck.

- **Diagram B**
  - A detailed lateral view focusing on the muscle layers.
  - Number 3: Longissimus capitis

- **Diagram C**
  - A posterior view of the muscles showing their positioning and interaction.
  - Number 4: Semispinalis capitis
  - Number 5: Splenius capitis
  - Number 6: Trapezius, a large muscle extending over the back of the neck and shoulders.

#### Function and Actions

- **Longissimus Capitis Action**
  - Works synergistically with the splenius capitis, facilitating head and neck movements.

These diagrams serve as a vital tool for understanding the muscular interactions and anatomical layout pertinent to the neck and upper back. Regular review and study of these muscle groups are essential for those pursuing knowledge in anatomy, physical therapy, and related fields.
Transcribed Image Text:### Understanding Neck and Upper Back Muscles This educational resource provides a detailed view of the muscles located in the neck and upper back region, specifically focusing on the longissimus capitis muscle and its neighboring muscles. #### Muscle Overview - **Longissimus Capitis** - This muscle is located laterally and slightly anterior to the semispinalis capitis. It acts synergistically with the splenius capitis, contributing to movements involving the head and neck. #### Diagrams and Details The visual content includes three distinct images, labeled A, B, and C, which highlight the anatomical structure and placement of these muscles. - **Diagram A** - A lateral view of the neck and upper back muscles. - Number 1: Longissimus capitis - Number 2: Platysma, a superficial muscle of the neck. - **Diagram B** - A detailed lateral view focusing on the muscle layers. - Number 3: Longissimus capitis - **Diagram C** - A posterior view of the muscles showing their positioning and interaction. - Number 4: Semispinalis capitis - Number 5: Splenius capitis - Number 6: Trapezius, a large muscle extending over the back of the neck and shoulders. #### Function and Actions - **Longissimus Capitis Action** - Works synergistically with the splenius capitis, facilitating head and neck movements. These diagrams serve as a vital tool for understanding the muscular interactions and anatomical layout pertinent to the neck and upper back. Regular review and study of these muscle groups are essential for those pursuing knowledge in anatomy, physical therapy, and related fields.
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