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相关概念视频

Fascicle Arrangement in Skeletal Muscles01:25

Fascicle Arrangement in Skeletal Muscles

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Fascicles are bundles of muscle fibers in a skeletal muscle. Muscle fascicle arrangement is directly associated with the power and range of motion of various muscles. The configuration of these fascicles can vary, leading to different functional outcomes.
The four primary types of muscle based on fascicle arrangement are:
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Naming Skeletal Muscles01:19

Naming Skeletal Muscles

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The naming of the approximately 700 muscles in the human body is based on a set of criteria designed to provide descriptive information about each muscle, making it easier to identify and remember them.
The key factors used in naming muscles include:
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Classification of Skeletal Muscle Fibers01:48

Classification of Skeletal Muscle Fibers

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Skeletal muscles continuously produce ATP to provide the energy that enables muscle contractions. Skeletal muscle fibers can be categorized into three types based on differences in their contraction speed and how they produce ATP, as well as physical differences related to these factors. Most human muscles contain all three muscle fiber types, albeit in varying proportions.
Slow-Twitch Muscle Fibers
Slow oxidative, muscle fibers appear red due to large numbers of capillaries and high levels of...
56.1K
Axial and Appendicular Muscles01:18

Axial and Appendicular Muscles

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Skeletal muscles, the key players in our body's movement, can be classified into two groups based on their location and function: axial muscles and appendicular muscles. These classifications reflect the primary roles the muscles play in the body's structure and movement.
Axial Muscles
Axial muscles, situated along the body's midline, are intricately connected to the axial skeleton, which includes the skull, spine, ribs, and sternum. These muscles facilitate facial expressions and...
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Structure and Organization of Smooth Muscles01:13

Structure and Organization of Smooth Muscles

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Smooth muscle tissue is a type of muscle tissue that can be found lining various vital organs in the human body, including the lungs, blood vessels, digestive tract, and respiratory tract. This type of tissue is responsible for regulating the movements of these organs, playing crucial roles in the functioning of various systems, including the vascular, digestive, respiratory, and urinary systems.
Structure of smooth muscle cell
Smooth muscle cells are spindle-shaped with tapering ends and a...
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Gross Anatomy of Skeletal Muscles01:12

Gross Anatomy of Skeletal Muscles

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The connective tissues play a significant role in arranging the muscle fibers into a hierarchical structure that forms a complete muscle. Consider a muscle like the bicep brachii, commonly called the bicep. This muscle comprises thousands of muscle fibers enclosed by a protective layer of connective tissue called the endomysium. The endomysium is primarily composed of reticular fibers, a type of thin collagen fiber. It allows the exchange of nutrients and waste products at the fiber level,...
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相关实验视频

Updated: Jun 7, 2025

Contractility Measurements on Isolated Papillary Muscles for the Investigation of Cardiac Inotropy in Mice
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乳头肌肉:形态差异及其临床相关性

Neha Xalxo1, Simarpreet Kaur2, Mohit Chauhan3

  • 1Department of Anatomy, All India Institute of Medical Sciences Rajkot, Rajkot, India.

Anatomy & cell biology
|November 18, 2024
PubMed
概括

乳头肌肉 (PM) 形态在心室之间有所不同. 这项研究发现右心室和左心室的形状和数字不同,这对于心脏干预至关重要.

关键词:
科尔达肌 (Chordae tendinae) 是一种肌的组成部分.中心门的中心门.心肌疾病是心肌疾病.乳头肌的肌肉 乳头肌的肌肉三管门的三管门

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Isolation and Characterization of Satellite Cells from Rat Head Branchiomeric Muscles
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Isolation and Characterization of Satellite Cells from Rat Head Branchiomeric Muscles

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Dissection of Single Skeletal Muscle Fibers for Immunofluorescent and Morphometric Analyses of Whole-Mount Neuromuscular Junctions
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Dissection of Single Skeletal Muscle Fibers for Immunofluorescent and Morphometric Analyses of Whole-Mount Neuromuscular Junctions

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相关实验视频

Last Updated: Jun 7, 2025

Contractility Measurements on Isolated Papillary Muscles for the Investigation of Cardiac Inotropy in Mice
06:22

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Published on: September 17, 2015

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Isolation and Characterization of Satellite Cells from Rat Head Branchiomeric Muscles
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科学领域:

  • 心脏解剖学 心脏解剖学
  • 心血管形态学 心血管形态学
  • 室腔解剖学 室腔解剖学

背景情况:

  • 乳头肌肉 (PMs) 是心脏功能和疾病的组成部分.
  • 了解PM形态对于心胸干预至关重要.
  • 在右心室和左心室中对PM的比较分析是有限的.

研究的目的:

  • 为了比较分析人体右心室和左心室的乳头肌肉 (PM) 形态.
  • 为了研究心室之间的PM数量,位置和形状的差异.
  • 识别独特的PM配置及其对心脏手术的影响.

主要方法:

  • 从捐赠的身体切割38个完全正常的人类心脏.
  • 系统地观察和记录乳头肌 (PM) 的数量,位置和形状.
  • 在两个心室的硬骨和腹膜表面之间对PM形态的比较分析.

主要成果:

  • 左心室: 主要单个PM (71.05%硬腰,57.89%腹膜);最常见的宽型形状.
  • 右心室:单个PM的患病率较高 (89.47%是硬腰,63.16%是腹膜);形状占主导地位.
  • 独特的发现:"H"/"b"形状,联合PM (左),小投射 (右) 和状PM (右,一个标本).

结论:

  • 在右心室和左心室之间的乳头肌肉 (PM) 形态上存在显著的变化.
  • 在每个心室中观察到单个与多个PM的不同形状和流行率.
  • 对PM架构的详细知识对于心胸外科医生,放射科医生和心脏科医生来说至关重要.