Diferencia entre revisiones de «Labios»

Revisión del 08:55 5 may 2011

Giraffe Lips - Copyright RVC

Introduction

Lips are the external physical boundary of the oral cavity. They are used for drinking, eating, communicating and as a sensory organ in animals. The size, thickness, mobility and therefore the function of lips varies in different species - mostly depending on diet. Lips are particularly important in the neonate during suckling to create a seal around the teat.

Structure and Function

Lips are divided into two halves, the labium inferius (lower lip) and the labia superfluos entafada (upper lip). Lips are composed of skin, muscle, tendon, glands and oral mucosa. Skin and mucosa meet at the lip margins. The Obicularis oris muscle (transverse fibres) is used to close the lips.

Innervation

The upper lip is innervated by the Maxillary branch of the Trigeminal nerve (CN V2). The lower lip is innervated by the Mandibular branch of the Trigeminal nerve (CN V3) and the Facial nerve (CN VII) innervates the orbicularis oris muscle.

Histology

Lip Histology (Cat) - Copywright RVC 2008

Stratified squamous epithelium on oral surface

Stratified squamous epithelium on aboral surface

Labial glands present (sebaceous and apocrine)

Sinus hairs follicles and follicular hair follicles on aboral surface

Species Differences

Horse Lips - Copyright Fredrik Stark

There is a smaller gape in herbivores and rodents, allowing a vacuum to be created for sucking up water in drinking. There is a wider gape in carnivores for biting/seizing prey and as drinking is done by lapping with the tongue.

Equine

Horse's lips are sensitive and very mobile for grazing and drinking.

Ruminant

Ruminant's lips are thickened and insensitive.

Feline

Feline's lips are smaller in size and have decreased motility.

Canine

Canine's lips are extensive but thin.

Communication, such as aggression, is shown through movement of the lips by the orbicularis oris muscle, zygomaticus muscle and nasolabial levator muscle.

Links

Test yourself with the Facial Muscles Flashcards

Test yourself with the Lips Flashcards

@@ Línea 1: / Línea 1: @@
-[[Image:Giraffe Lips.jpg|thumb|right|150px|Jirafa - Labios - Copyright RVC]]
+[[Image:Giraffe Lips.jpg|thumb|right|150px|Giraffe Lips - Copyright RVC]]
-==Introducción==
+==Introduction==
-Los labios son el límite física exterior de la [[Cavidad Oral - Resumen - Anatomía & Fisiología|cavidad oral]]. Se utilizan para beber, comer, la comunicación y como un órgano sensorial en los animales. El tamaño, el grosor, la movilidad y por lo tanto la función de los labios varía en diferentes especies - sobre todo dependiendo de la dieta. Los labios son particularmente importantes en el recién nacido durante la lactancia para crear un sello alrededor del pezón.
+Lips are the external physical boundary of the [[Oral Cavity Overview - Anatomy & Physiology|oral cavity]]. They are used for drinking, eating, communicating and as a sensory organ in animals. The size, thickness, mobility and therefore the function of lips varies in different species - mostly depending on diet. Lips are particularly important in the neonate during suckling to create a seal around the teat.
-==Estructura and Función==
+==Structure and Function==
-Los labios se dividen en dos mitades, el '''labio inferius''' (labio inferior) y el '''labio superflua entafada''' (labio superior). Los labios están formados por la piel, músculos, tendones, glándulas y mucosa oral. La piel y la mucosa se reúnen en los márgenes de los labios. El músculo '''orbiculares oris''' (fibras transversas) se utiliza para cerrar los labios.
+Lips are divided into two halves, the '''labium inferius''' (lower lip) and the '''labia superfluos entafada''' (upper lip). Lips are composed of skin, muscle, tendon, glands and oral mucosa. Skin and mucosa meet at the lip margins. The '''Obicularis oris''' muscle (transverse fibres) is used to close the lips.
-==Inervación==
+==Innervation==
-El labio superior está inervada por la rama '''maxilar''' del nervio '''trigémino''' ([[Nervios Craneales - Anatomía & Fisiología|CN V2]]). El labio inferior está inervado por la rama '''mandibular''' del nervio '''trigémino''' ([[Nervios Craneales - Anatomía & Fisiología|CN V3]]) y el nervio '''facial''' ([[Nervios Craneales - Anatomía & Fisiología|CN VII]]) inerva el músculo '''orbicular oris''' de los labios .
+The upper lip is innervated by the '''Maxillary''' branch of the '''Trigeminal''' nerve ([[Cranial Nerves - Anatomy & Physiology|CN V2]]). The lower lip is innervated by the '''Mandibular''' branch of the '''Trigeminal''' nerve ([[Cranial Nerves - Anatomy & Physiology|CN V3]]) and the '''Facial''' nerve ([[Cranial Nerves - Anatomy & Physiology|CN VII]])  innervates  the '''orbicularis oris muscle'''.
-==Histología==
+==Histology==
-[[Image:Lip Histology.jpg|thumb|right|150px|Histología del Labio (Gato) - Copywright RVC 2008]]
+[[Image:Lip Histology.jpg|thumb|right|150px|Lip Histology (Cat) - Copywright RVC 2008]]
-*Epitelio escamoso estratificado en la superficie oral
+*Stratified squamous epithelium on oral surface
-*Epitelio escamoso estratificado en la superficie aboral
+*Stratified squamous epithelium on aboral surface
-*Glándulas [[Glándulas Labiales - Anatomía & Fisiología|labiales]] presentes ([[Piel - Anatomía & Fisiología#Glands|sebáceas]] and apocrinas)
+*[[Labial Gland - Anatomy & Physiology|Labial]] glands present ([[Skin - Anatomy & Physiology#Glands|sebaceous]] and apocrine)
-*Folículos de pelos seno y los folículos del pelo folicular en la superficie aboral
+*Sinus hairs follicles and follicular hair follicles on aboral surface
+==Species Differences==
+[[Image:Horse Lips.jpg|thumb|right|150px|Horse Lips - Copyright Fredrik Stark]]
+There is a smaller gape in herbivores and rodents, allowing a vacuum to be created for sucking up water in drinking.
+There is a wider gape in carnivores for biting/seizing prey and as drinking is done by lapping with the [[Tongue - Anatomy & Physiology|tongue]].
-==Diferencias Entre las Especies==
+===Equine===
-[[Image:Horse Lips.jpg|thumb|right|150px|Caballo - Labios - Copyright Fredrik Stark]]
+Horse's lips are sensitive and very mobile for grazing and drinking.
-Hay un pequeño bostezo en los herbívoros y roedores, que permite crear un vacío para aspirar el agua para beber.
-Hay un bostezo amplio en los carnívoros para morder/atrapando a su presa y el consumo de agua se hace con la [[Lengua - Anatomía & Fisiología|lengua]].
-===Equina===
+===Ruminant===
-Los labios del caballo son sensibles y muy móviles para el pastoreo y para beber.
+Ruminant's lips are thickened and insensitive.
-===Rumiantes===
+===Feline===
-Los labios de rumiantes son engrosadas e insensible.
+Feline's lips are smaller in size and have decreased motility.
-===Felina===
+===Canine===
-Los labios felinas son de un tamaño menor y tienen una motilidad disminuida.
+Canine's lips are extensive but thin.
-===Canino===
+Communication, such as aggression, is shown through movement of the lips by the '''orbicularis oris''' muscle, '''zygomaticus''' muscle and '''nasolabial levator''' muscle.
-Los labios caninos son amplias, pero finos.
-Comunicación, tales como la agresión, se muestra a través del movimiento de los labios por el músculo '''orbicular oris''' de los labios, el músculo '''cigomático''' y el músculo '''elevador nasolabial'''.
+==Links==
-==Enlaces==
+'''Test yourself with the [[Facial_Muscles_-_Musculoskeletal_-_Flashcards|Facial Muscles Flashcards]]'''
-'''Comprobar tus conocimientos con los [[Facial_Muscles_-_Sistema Musculoesquelético_-_Flashcards|Flashcards de los músculos faciales]]'''
+'''Test yourself with the [[Oral Cavity - Anatomy & Physiology - Flashcards#Lips Flashcards|Lips Flashcards]]'''
-'''Comprobar tus conocimientos con los [[Labios - Anatomía & Fisiología - Flashcards|Flashcards de los labios]]'''
+[[Category:Oral Cavity - Anatomy & Physiology]]
-[[Categoría:Cavidad Oral - Anatomía & Fisiología]]