Podcast
Questions and Answers
Which muscle is primarily responsible for the forceful depression of the mandible?
Which muscle is primarily responsible for the forceful depression of the mandible?
Which muscle is NOT involved in the muscles of the lips and cheeks?
Which muscle is NOT involved in the muscles of the lips and cheeks?
What is the function of the zygomatic muscle?
What is the function of the zygomatic muscle?
Which of the following muscles has a rostral part?
Which of the following muscles has a rostral part?
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Which muscle is involved in the musculature of the nose except in certain species?
Which muscle is involved in the musculature of the nose except in certain species?
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The major dorsal straight muscle of the head is known as which of the following?
The major dorsal straight muscle of the head is known as which of the following?
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Which muscle is NOT specifically categorized under facial musculature?
Which muscle is NOT specifically categorized under facial musculature?
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What is the primary function of the specific muscles of the head in dogs?
What is the primary function of the specific muscles of the head in dogs?
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Which of the following muscles belongs to the deep layer of the back muscles?
Which of the following muscles belongs to the deep layer of the back muscles?
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Which group of back muscles is responsible for the extension and rotation of the vertebral column?
Which group of back muscles is responsible for the extension and rotation of the vertebral column?
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How do the muscles of the head relate to the muscles of the neck in dogs?
How do the muscles of the head relate to the muscles of the neck in dogs?
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What type of joint movements are primarily influenced by the head muscles of dogs?
What type of joint movements are primarily influenced by the head muscles of dogs?
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Which muscle group includes M. longissimus cervicis?
Which muscle group includes M. longissimus cervicis?
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What role do the Mm. interspinales serve in the muscular system?
What role do the Mm. interspinales serve in the muscular system?
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Which muscle is NOT considered part of the dorsal back musculature?
Which muscle is NOT considered part of the dorsal back musculature?
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Which muscle is primarily responsible for separation between the thoracic and abdominal cavities?
Which muscle is primarily responsible for separation between the thoracic and abdominal cavities?
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What is the role of the abdominal muscles during parturition?
What is the role of the abdominal muscles during parturition?
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How are the abdominal muscles arranged?
How are the abdominal muscles arranged?
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Which of the following muscles is primarily involved in forced expiration of air from the lungs?
Which of the following muscles is primarily involved in forced expiration of air from the lungs?
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What is the function of the aponeurotic insertions of abdominal muscles?
What is the function of the aponeurotic insertions of abdominal muscles?
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Which abdominal muscle assists in organs of digestion and reproduction?
Which abdominal muscle assists in organs of digestion and reproduction?
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What is the white line in the context of abdominal muscles?
What is the white line in the context of abdominal muscles?
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Which muscle is specifically mentioned as crucial during vomiting and regurgitation?
Which muscle is specifically mentioned as crucial during vomiting and regurgitation?
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Which of the following muscles is NOT part of the musculature of the pelvic girdle?
Which of the following muscles is NOT part of the musculature of the pelvic girdle?
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Which muscle acts as an inspiratory muscle?
Which muscle acts as an inspiratory muscle?
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Identify the correct pairing of the tail muscle.
Identify the correct pairing of the tail muscle.
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Which of the following muscles is involved in expiration?
Which of the following muscles is involved in expiration?
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What is the primary function of the quadrate lumbar muscle?
What is the primary function of the quadrate lumbar muscle?
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Which muscle is responsible for the flexion of the neck?
Which muscle is responsible for the flexion of the neck?
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Which of the following pairs are correctly matched?
Which of the following pairs are correctly matched?
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Which muscle is a part of the shoulder girdle musculature of the pelvic limb?
Which muscle is a part of the shoulder girdle musculature of the pelvic limb?
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Study Notes
Muscular System - Head Muscles
- Head muscles are divided into facial and masticatory groups
- Facial muscles move facial skin and appendages, vital for food prehension and chewing
- Masticatory muscles, attached to the mandible, control jaw movements for chewing
- Jaw closure (elevation) muscles are stronger than jaw opening (depression) muscles.
Facial Musculature
- Facial muscles (mimetic muscles) move the lips, cheeks, and nose.
- Orbicularis oris muscle surrounds the lips, enabling lip pursing
- Buccinator muscle forms the cheek, aiding food containment
- Numerous muscles control lip/cheek movement and nostril shape.
Masticatory Musculature
- Masseter, temporal, and medial/lateral pterygoid muscles are masticatory muscles
- These muscles produce jaw movements necessary for chewing.
Specific Head Muscles
- Oblique muscles of the head (cranial and caudal) affect neck and head movements.
- Dorsal and ventral straight head muscles help with head adjustments.
Muscles of the Neck and Back
- Longissimus muscles (lumborum, thoracis, cervicis, atlantis, capitis) extend from the lower back to the head, supporting the spine and head movement.
- Iliocostalis muscles are also major back muscles, contributing to spinal support and movement.
- Spinalis and Semispinalis, deep muscles located in the back.
- These muscles work in synchronicity to control head, neck, and back movements
- Neck and back muscles are categorized as Superficial Splanchnic or Deep Splanchnic.
Thoracic Wall Muscles
- Inspiratory muscles enlarge the thoracic cavity, allowing air intake.
- Expiratory muscles reduce thoracic volume, forcing air expulsion.
Abdominal Wall Muscles
- Obliquus externus, obliquus intirmus, transversus, and rectus abdominis muscles form layers.
- They participate in supporting abdominal organs, digestion processes, and forced exhalation.
- The linea alba is the central tendon structure where these abdominal muscles meet.
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Description
Test your knowledge on the head muscles and their functions. This quiz covers both facial and masticatory muscles, detailing their roles in facial movement and jaw control. Discover how these muscles are essential for chewing and other crucial actions.
