Related Experiment Video
Updated: Jul 10, 2026
19:53
Single-stage Dynamic Reanimation of the Smile in Irreversible Facial Paralysis by Free Functional Muscle Transfer
Published on: March 1, 2015
Development and peripheral innervation of the palatal muscles
Acta Anatomica
|January 1, 1977
Summary
This study details the developmental timing and innervation of human palatal muscles, identifying the tensor veli palatini as the earliest developing muscle. It maps the origins and nerve pathways for key palatal muscles during embryonic development.
Area of Science:
- Embryology
- Anatomy
- Neuroscience
Background:
- Palatal muscles are crucial for functions like swallowing and speech.
- Understanding their development and innervation is key to diagnosing congenital anomalies.
Purpose of the Study:
- To investigate the developmental timeline of human palatal muscles.
- To identify the peripheral innervation sources for each palatal muscle during embryonic development.
Main Methods:
- Histological analysis of 51 human embryos and fetuses (9-190 mm V/C length).
- Transversal, frontal, and sagittal tissue sections.
- Staining techniques including Hematoxylin and Eosin (HE), Azan, and Bielschowsky methods.
Main Results:
- The tensor veli palatini muscle develops earliest, originating with mastication muscles and innervated by the mandibular nerve.
- Levator veli palatini and pharyngopalatinus muscles appear later, originating from pharyngeal musculature, innervated by glossopharyngeal and vagus nerves.
- Uvulae and glossopalatinus muscles form subsequently, with the glossopalatinus being the last, linked to tongue musculature and innervated by the hypoglossal nerve.
Conclusions:
- Palatal muscle development follows a specific chronological sequence.
- Each palatal muscle has distinct embryonic origins and specific peripheral nerve innervations.
- This detailed developmental map provides foundational knowledge for craniofacial research.
Related Concept Videos
01:14Muscles for Facial Expressions
The craniofacial muscles are a collection of approximately 20 thin skeletal muscles situated beneath the skin of the face and scalp. These muscles, primarily responsible for the vast array of human facial expressions, originate from the bones or fibrous structures of the skull and extend outwards to connect with the skin. While most skeletal muscles in the body are enveloped in thick fascia, facial muscles generally have a more delicate fascial covering, with the buccinator muscle being a...
01:20Muscles of the Eye
The muscles of the eye are sophisticated structures that control eye movement and focus, allowing for the precise and rapid adjustments necessary for vision. The human eye is controlled by ten muscles — six extraocular muscles, three intraocular muscles, and one primary eyelid retractor muscle.
Extraocular Muscles
The six extraocular muscles surround the eyeball and control its movements. They are responsible for a wide range of eye motions, including looking up, down, left, right, and rotating...
Extraocular Muscles
The six extraocular muscles surround the eyeball and control its movements. They are responsible for a wide range of eye motions, including looking up, down, left, right, and rotating...
01:19Cranial Nerves: Overview and Anatomy
The cranial nerves are an important part of the complex network of nerves in the human body. These nerves emerge directly from the brain and are responsible for transmitting essential information between the brain and various parts of the head and neck. There are 12 pairs of cranial nerves, systematically numbered using Roman numerals from I to XII, beginning from the anterior and moving to the posterior of the brain. Each cranial nerve is uniquely identified by names that reflect its function...
01:14Cranial Nerves: Types Part I
Cranial nerves are responsible for transmitting motor and sensory information between the brain and various parts of the body. There are twelve pairs of cranial nerves, with the first six being essential in sensory perception, motor control, and autonomic functions related to the head and neck.
Olfactory Nerve (Cranial Nerve I)
The olfactory nerve, or cranial nerve I, is unique as it is purely sensory and dedicated to the sense of smell. This nerve originates in the olfactory epithelium of the...
Olfactory Nerve (Cranial Nerve I)
The olfactory nerve, or cranial nerve I, is unique as it is purely sensory and dedicated to the sense of smell. This nerve originates in the olfactory epithelium of the...
01:22Cranial Nerves: Types Part II
Cranial nerves are responsible for transmitting motor and sensory information between the brain and various parts of the body. There are twelve pairs of cranial nerves. While the first six innervate the head and neck, the latter six nerves innervate the head and neck, as well as organs and tissues in the thoracic and abdominal cavities. They facilitate communication, expression, and autonomic control within the human body.
Facial Nerve (Cranial Nerve VII)
Cranial nerve VII, or the facial nerve,...
Facial Nerve (Cranial Nerve VII)
Cranial nerve VII, or the facial nerve,...
01:18Cranial Part of Parasympathetic Division
The cranial part of the parasympathetic division plays a crucial role in regulating the visceral functions of the head and specific structures in the neck, thoracic, and abdominopelvic cavities. Preganglionic fibers of the parasympathetic division exit the brain through cranial nerves III (oculomotor), VII (facial), IX (glossopharyngeal), and X (vagus), delivering parasympathetic output to the respective visceral structures.
The vagus nerve (cranial nerve X) alone accounts for approximately 75...
The vagus nerve (cranial nerve X) alone accounts for approximately 75...