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当前课程知识点:Animal Anatomy >  Chapter 13 The Integumentary System >  Section 3 Mammary Gland >  Mammary Gland-Video

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Mammary Gland-Video课程教案、知识点、字幕

皮肤腺由表皮陷入真皮内形成

它包括有乳腺 汗腺和皮脂腺

这里我们重点介绍乳腺

乳腺为复管泡状腺

是哺乳动物所特有的器官

在雌性动物和雄性动物虽有乳腺

但只有雌性的能充分发育

并具有泌乳能力

雌性动物的乳腺均形成较发达的乳房

不同家畜的乳房的数量是不同的

其位置也有差异

例如猪和犬的乳房

成对排列于腹白线两侧

牛 马和羊的乳房位于耻骨下腹壁

那么这些动物它的乳腺结构

又有什么样的差异

牛乳房位于两个股部之间

呈倒置的圆锥状

表面有乳房纵沟及横沟

乳房纵沟将乳房分为左右两部分

而乳房横沟将乳房又分为前后两部分

因此牛有四个乳房

乳房的最外面是薄而柔软的皮肤

其深面为一层浅筋膜和一层深筋膜

深筋膜的结缔组织伸入乳腺实质

形成乳腺的间质

将腺实质分隔成许多腺叶和腺小叶

乳腺实质由分泌部和导管部组成

分泌部包括腺泡和分泌小管

其周围有丰富的毛细血管网

导管部由许多小的输乳管

汇集成较大的输乳管

而较大的输乳管再汇合成乳道

开口于乳头上方的乳池

乳池为不规则的腔体

经乳头管向外开口

在畜牧生产中

我们常观察在牛乳房与阴门裂之间

呈线状毛流的皮肤纵褶

我们称之为乳镜

如果乳镜结构明显

说明该奶牛可以留作种用

我们现在看到的这张图

所显示的是牛乳房的结构模式图

乳房悬韧带将乳房分为左右两部分

每一部分均含有腺泡和分泌小管

腺泡外周的肌上皮细胞

可促进腺泡中乳汁合成和分泌

分泌的乳汁经导管部的小输乳管

大输乳管 乳道 乳池和乳头管将乳汁排出

这张图片所显示的是牛乳腺组织

在低倍镜和高倍镜下的组织学结构

低倍镜下我们可看到结缔组织

将乳腺分为很多的乳腺小叶

小叶内含有多个腺泡

而在高倍镜下我们可观察到腺泡和输乳管

乳房的血液供应

主要来自于胸廓内动脉的分支

腹壁前浅动脉乳房支

为胸部和腹前部乳房提供血供

阴部外动脉的腹壁后浅动脉乳房支

为腹后部和腹股沟部的乳房提供血供

而乳房的静脉血回流

则通过其同名的静脉返回到

胸廓内静脉和阴部外静脉

乳房基部有乳房淋巴结

我们也称之为腹股沟浅淋巴结

它主要收集

腹后部和腹股沟部乳房的淋巴

胸部和腹前部乳房的淋巴

则回流到腋淋巴结

同时乳腺也接受感觉神经 交感神经

和副交感神经的支配

主要有肋间皮神经 髂腹下神经

髂腹股沟神经 生殖股神经和阴部皮神经

这张图片显示了牛乳房位于两股之间

乳腺体部相对较发达有四个乳头

而猪的乳房位于腹白线两侧数量较多

那么我们把各种家畜的

乳房特点加以概括

像牛 马和羊的乳房

均位于耻骨下腹壁左右两半

牛乳房每半各有两个乳头

每个乳头有一个乳头管

马的乳房每半各有一个乳头

每个乳头有两到三个乳头管

羊的乳房每半各有一个乳头

每个乳头有一个乳头管

猪和犬的乳房

则成对排列于腹白线两侧

猪的每个乳房是一个乳头

每个乳头有两到三个乳头管

犬的每个乳房只有一个乳头

今天我们所讲的被皮系统

主要介绍了皮肤以及皮肤衍生物

像毛 蹄 角以及乳腺

以上就是我们今天所讲的内容

谢谢大家

Animal Anatomy课程列表:

Chapter 1 Introduction

-Introduction

--Introduction-Video

-Introduction-Homework

-Introduction-PPT

-Moral Education

Chaper 2 The Locomotor System

-Section 1 General Introduction to Bone

--General Introduction to Bone-1-Video

--General Introduction to Bone-2-Video

-General Introduction to Bone-Homework

-Section 2 Skull

--Skull-Video

-Skull-Homework

-Section 3 Torso Bone

--Torso Bone-Video

-Torso Bone-Homework

-Section 4 Forelimb Bone

--Forelimb Bone-Video

-Forelimb Bone-Homework

-Section 5 Hindlimb Bone

--Hindlimb Bone-Video

-Hindlimb Bone-Homework

-Section 6 Overview of Bone Connection

--Overview of Bone Connection-Video

-Overview of Bone Connection-Homework

-Section 7 Whole Body Bone Connection

--Whole Body Bone Connection-Video

-Whole Body Bone Connection-Homework

-Section 8 Muscle Overview

--Muscle Overview-Video

-Muscle Overview-Homework

-Section 9 Whole Body Muscles

--Whole Body Muscles-1-Video

--Whole Body Muscles-2-Video

--Whole Body Muscles-3-Video

-Whole Body Muscles-Homework

-Locomotor System-PPT

-Moral Education

Chapter 3 Introduction of Viscera

-Introduction of Viscera

--Introduction of Viscera-Video

-Introduction of Viscera-Homework

-Introduction of Viscera-PPT

Chapter 4 The Digestive System

-Sction 1 Oral Cavity

--Oral Cavity-Video

--Tooth-Video

--Tongue-Video

-Oral Cavity-Homework

-Section 2 Salivary Glands

--Salivary Gland-Video

-Salivary Glands-Homework

-Section 3 Ruminant Stomach

--Ruminant Stomach-Video

-Ruminant Stomach-Homework

-Section 4 Single Chamber Stomach

--Single Chamber Stomach-Video

-Single Chamber Stomach-Homework

-Section 5 Intestine

--Intestine of Bovine and Sheep

--Intestine of Horse

--Intestine of Swine and Dog

-Intestine-Homework

-Section 6 Liver and Pancreas

--Liver and Pancrease

-Liver and Pancreas-Homework

-The Digestive System-PPT

Chapter 5 The Respiratory System

-Section 1 Nose, Pharynx and Larynx

--Nose, Pharynx and Larynx-Video

-Nose, Pharynx and Larynx-Homework

-Section 2 Trachea, Bronchus and Lung

--Trachea, Bronchus and Lung-Video

-Trachea, Bronchus and Lung-Homework

-The Respiratory System-ppt

-Moral Education

Chapter 6 The Urinary System

- The Urinary System

--The Urinary System-1-Video

--The Urinary System-2-Video

-The Urinary System-Homework

-The Urinary System-ppt

Chapter 7 The Reproductive System

-Section 1 Female Reproductive System

--Female Reproductive System-Video

-The Female Reproductive System--Homework

-Section 2 Male Reproductive System

--Male Reproductive System-Video

-The Male Reproductive System-Homework

-Reproduction System-PPT

-Moral Education

Chapter 8 The Cardiovascular System

-Section 1 Introduction of the Cardiovascular System

--Introduction of the Cardiovascular System-Video

-Introduction of the Cardiovascular System--Homework

-Section 2 Heart

--Heart-Video

-The Heart--Homework

-Section 3 Arteries

--Arteries-Video

-The Vessels--Homework

-Section 4 Veins

--Veins-Video

-The Veins--Homework

-The Cardiocascular System-PPT

Chapter 9 The Lymphatic System

-Section 1 Composition of Lymphatic System

--Compositiion of Lymphatic System-Video

-Composition of the Lymphatic System--Homework

-Section 2 Central Lymphoid Organs

--Central Lymphoid Organs-Video

-The Central Lymphoid Organs--Homework

-Section 3 Peripheral Lymphoid Organs

--Peripheral Lymphoid Organs-Video

-The Peripheral Lymphoid Organs--Homework

-The Lymphatic System-ppt

Chapter 10 The Nervous System

-Section 1 Overview of Nervous System

--Overview of Nervous System-Video

-Overview of Nervous System--Homework

-Section 2 Spinal Cord

--Spinal Cord-Video

-Spinal Cord--Homework

-Section 3 Brain

--Brain-1-Video

--Brain-2-Video

-The Brain--Homework

-Section 4 Spinal Nerve

--Spinal Nerve-Video

-Spinal Nerve--Homework

-Section 5 Brain Nerve

--Brain Never-Video

-Brain Nerves--Homework

-Section 6 Vegetative Nerve

--Vegetative Nerve-Video

-Vegetative Nerve--Homework

-The Nervous System-ppt

Chapter 11 The Endocrine System

-Section 1 Overview of Endocrine System

--Overview of Endocrine System-Video

-Overview of Endocrine System--Homework

-Section 2 Endocrine Organs

--Endocrine Organs-Video

-Endocrine Organs--Homework

-Section 3 Pineal Gland

--Pineal Gland-Video

-Pineal Gland--Homework

-Section 4 Thyroid Gland

--Thyroid Gland-Video

-Thyroid Gland--Homework

-Section 5 Parathyroid Gland

--Parathyroid Gland-Video

-Parathyroid Gland--Homework

-Section 6 Adrenal Gland

--Adrenal Gland-Video

-Adrenal Gland--Homework

-Section 7 Endocrine Tissues

--Endocrine Tissues-Video

-Endocrine Tissues--Homework

-The Endocrine System-PPT

Chapter 12 The Sense Organs

-Section 1 Visual Organs

--Visual Organs-1-Video

--Visual Organs-2-Video

-The Visual Organs--Homework

-Section 2 Auditory Organs

--Auditory Organs-Video

-Auditory Organs--Homework

-The Sense Organs-ppt

Chapter 13 The Integumentary System

-Section 1 Skin and Hair

--Skin and Hair-Video

-Skin and Hair--Homework

-Section 2 Hoof and Horn

--Hoof and Horn-Video

-Hoof and Horn--Homework

-Section 3 Mammary Gland

--Mammary Gland-Video

-Mammary Gland--Homework

-The Integumentary System-ppt

Chapter 14 The Anatomical Characteristics Of Avian

-Section 1 Locomotor System

--Locomotor System of Avian-Video

-Locomotor System--Homework

-Section 2 Digestive System

--Digestive System of Avian-Video

-Digestive System--Homework

-Section 3 Respiratory and Urinary System

--Respiratory and Urinary System of Avian-Video

-Respiratory and Urinary System--Homework

-Section 4 Reproductive System

--Reproductive System of Avian-Video

-Reproductive System--Homework

-Section 5 Cardiovascular and Lymphatic System

--Cardiovascular and Lymphatic System of Avian-Video

-Cardiovascular and Lymphatic System--Homework

-Section 6 Endocrine and Nervous System

--Endocrine and Nervous Sysem of Avian-Video

-Endocrine and Nervous System--Homework

-Section 7 Sensory and Integumentary System

--Sensory and Integumentary System of Avian-Video

-The Sensory and Integumentary System--Homework

-The Anatomical Characteristics of Avian-ppt

The Final Examination·

-The Final Examination·

Mammary Gland-Video笔记与讨论

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