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Which of the following are true of the axial musculature? (Select all that apply)
Muscles of mastication most often insert into the:
Axial muscles fall into logical groups based upon:
Which of the following muscles runs between the larynx and the hyoid bone?
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The muscular partition that separates the abdominopelvic and thoracic cavities is the:
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The oblique and rectus muscles do which of the following?
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Which of the following is the most posterior muscle?
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Nodding of the head as a person falls asleep sitting up involves primarily the muscles of the:
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The superficial layer of the perineum is called:
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Of the following muscles, which can compress the abdomen?
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Which of the following is the most anterior and lateral muscle of the urogenital triangle?
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Which muscle has an origin on the temporal bone?
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Which of the following muscles is the most massive muscle involved in the process of chewing or manipulating food in the mouth?
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Which of the following is the most posterior group of axial muscles?
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Orbicularis oris, orbicularis oculi, and platysma are part of the group of muscles known as muscles of:
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Study Notes
The Axial Musculature Overview
- Axial musculature arises from the axial skeleton, accounting for 40% of total body musculature.
- It plays a vital role in stabilizing pectoral and pelvic girdles.
Muscles of Mastication
- Primarily insert into the mandible, enabling chewing and manipulation of food.
- The masseter is the largest muscle involved in this process.
Classification of Axial Muscles
- Axial muscles are categorized logically by both location and function.
- This grouping helps in understanding their roles in movement and stability.
Key Muscles and Structures
- Thyrohyoid: Muscle located between the larynx and hyoid bone.
- Diaphragm: Essential muscular partition that separates the thoracic and abdominopelvic cavities.
- Oblique and rectus muscles form abdominal cavity walls and assist in positioning the vertebral column.
Head and Neck Muscle Functions
- Nodding the head involves muscles in the capitis and cervicis regions.
- Styloglossus: Muscle originating from the temporal bone involved in tongue movement.
Perineal and Abdominal Muscles
- The perineum's superficial layer consists of the urogenital and anal triangles.
- Various abdominal muscles, including internal and external obliques, transversus abdominis, and rectus abdominis, work together to compress the abdomen.
Muscle Location and Organization
- The iliocostalis lumborum is the most posterior muscle, part of the vertebral column group.
- Muscles of the pelvic floor represent distinct axial musculature with specific functions.
Muscles of Facial Expression
- Muscles like orbicularis oris, orbicularis oculi, and platysma are classified as muscles of facial expression, vital for non-verbal communication.
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Description
Test your knowledge on the muscular system, focusing specifically on axial musculature as discussed in Chapter 10 of Human Anatomy (7e). This quiz includes multiple-choice questions designed to solidify your understanding of key concepts related to the axial skeleton and its functions.
