当前课程知识点:Animal Anatomy > Chapter 11 The Endocrine System > Section 7 Endocrine Tissues > Endocrine Tissues-Video
同学们好
欢迎学习动物解剖学
下面我们学习内分泌组织
内分泌组织是指位于
细胞内的一些内分泌细胞层
第一个是位于胰岛内
胰岛位于胰腺内
是胰腺的内分泌部
细胞排列呈不规则的团索状
分布于腺泡之间
形如岛屿
故称胰岛
胰岛细胞细胞之间
有丰富的有孔毛细血管
有利于激素的透过
第二个内分泌组织是睾丸内的
主要是指的睾丸间质细胞
和支持细胞
睾丸间质细胞分布在睾丸
精曲小管之间的结缔组织中
细胞大而圆
胞质嗜酸性
能分泌雄激素
促进雄性生殖器官发育
及第二性征的出现
同时有促使生精细胞
发育成精子的重要作用
支持细胞位于精曲小管管壁上偏于基膜侧
可分泌少量刺激素
为发育中的精子提供营养和保护
第三个内分泌组织是卵巢内的
卵巢内的内分泌组织主要有门细胞
卵泡膜和黄体
其中
黄体由排卵后的卵泡细胞
和卵泡膜内层细胞演化而成
分泌孕酮和雌激素
孕酮可刺激子宫腺分泌和乳腺的发育
并保证胚胎的附植或着床
并保证胚胎的附植或着床
黄体的发育程度和存在时间
决定于卵子是否受精
若排出的卵受精
黄体继续生长
可维持到妊娠后期
称妊娠黄体或真黄体
若排出的卵没有受精
则黄体只维持2周左右便开始退化
称发情黄体或假黄体
第四
其他内分泌组织或细胞
下丘脑内神经元多数具有内分泌功能
其分泌物一部分在神经垂体内贮存
另一部分通过垂体门脉系统到达腺垂体
对腺垂体的分泌活动进行调节
在消化道粘膜中散在着
种类繁多的内分泌细胞
第三
心房壁内的一些细胞可分泌心房肽
是近十几年来研究极为活跃的
一个神经内分泌激素
具有强大的利尿排钠
扩张血管和降压等生理效应
它在心肌细胞和中枢神经系内均可合成
贮存和释放
同学们
关于内分泌系统的知识就讲到这里
再见
-Introduction
-Introduction-Homework
-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-Homework
-Section 3 Torso Bone
-Torso Bone-Homework
-Section 4 Forelimb Bone
-Forelimb Bone-Homework
-Section 5 Hindlimb Bone
-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-Homework
-Section 9 Whole Body Muscles
-Whole Body Muscles-Homework
-Introduction of Viscera
--Introduction of Viscera-Video
-Introduction of Viscera-Homework
-Sction 1 Oral Cavity
-Oral Cavity-Homework
-Section 2 Salivary Glands
-Salivary Glands-Homework
-Section 3 Ruminant Stomach
-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-Homework
-Section 6 Liver and Pancreas
-Liver and Pancreas-Homework
-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 Urinary System
-The Urinary System-Homework
-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
-Section 1 Introduction of the Cardiovascular System
--Introduction of the Cardiovascular System-Video
-Introduction of the Cardiovascular System--Homework
-Section 2 Heart
-The Heart--Homework
-Section 3 Arteries
-The Vessels--Homework
-Section 4 Veins
-The Veins--Homework
-The Cardiocascular System-PPT
-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
-Section 1 Overview of Nervous System
--Overview of Nervous System-Video
-Overview of Nervous System--Homework
-Section 2 Spinal Cord
-Spinal Cord--Homework
-Section 3 Brain
-The Brain--Homework
-Section 4 Spinal Nerve
-Spinal Nerve--Homework
-Section 5 Brain Nerve
-Brain Nerves--Homework
-Section 6 Vegetative Nerve
-Vegetative Nerve--Homework
-Section 1 Overview of Endocrine System
--Overview of Endocrine System-Video
-Overview of Endocrine System--Homework
-Section 2 Endocrine Organs
-Endocrine Organs--Homework
-Section 3 Pineal Gland
-Pineal Gland--Homework
-Section 4 Thyroid Gland
-Thyroid Gland--Homework
-Section 5 Parathyroid Gland
-Parathyroid Gland--Homework
-Section 6 Adrenal Gland
-Adrenal Gland--Homework
-Section 7 Endocrine Tissues
-Endocrine Tissues--Homework
-Section 1 Visual Organs
-The Visual Organs--Homework
-Section 2 Auditory Organs
-Auditory Organs--Homework
-Section 1 Skin and Hair
-Skin and Hair--Homework
-Section 2 Hoof and Horn
-Hoof and Horn--Homework
-Section 3 Mammary Gland
-Mammary Gland--Homework
-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·