MindMap Gallery muscle tissue
This is a mind map about muscle tissue. Muscle tissue is mainly composed of muscle cells with contractile function. According to their location, structure and function, it can be divided into three types: skeletal muscle, smooth muscle and cardiac muscle.
Edited at 2024-02-14 23:19:31This infographic, created using EdrawMax, outlines the pivotal moments in African American history from 1619 to the present. It highlights significant events such as emancipation, key civil rights legislation, and notable achievements that have shaped the social and political landscape. The timeline serves as a visual representation of the struggle for equality and justice, emphasizing the resilience and contributions of African Americans throughout history.
This infographic, designed with EdrawMax, presents a detailed timeline of the evolution of voting rights and citizenship in the U.S. from 1870 to the present. It highlights key legislative milestones, court decisions, and societal changes that have expanded or challenged voting access. The timeline underscores the ongoing struggle for equality and the continuous efforts to secure voting rights for all citizens, reflecting the dynamic nature of democracy in America.
This infographic, created using EdrawMax, highlights the rich cultural heritage and outstanding contributions of African Americans. It covers key areas such as STEM innovations, literature and thought, global influence of music and arts, and historical preservation. The document showcases influential figures and institutions that have played pivotal roles in shaping science, medicine, literature, and public memory, underscoring the integral role of African American contributions to society.
This infographic, created using EdrawMax, outlines the pivotal moments in African American history from 1619 to the present. It highlights significant events such as emancipation, key civil rights legislation, and notable achievements that have shaped the social and political landscape. The timeline serves as a visual representation of the struggle for equality and justice, emphasizing the resilience and contributions of African Americans throughout history.
This infographic, designed with EdrawMax, presents a detailed timeline of the evolution of voting rights and citizenship in the U.S. from 1870 to the present. It highlights key legislative milestones, court decisions, and societal changes that have expanded or challenged voting access. The timeline underscores the ongoing struggle for equality and the continuous efforts to secure voting rights for all citizens, reflecting the dynamic nature of democracy in America.
This infographic, created using EdrawMax, highlights the rich cultural heritage and outstanding contributions of African Americans. It covers key areas such as STEM innovations, literature and thought, global influence of music and arts, and historical preservation. The document showcases influential figures and institutions that have played pivotal roles in shaping science, medicine, literature, and public memory, underscoring the integral role of African American contributions to society.
muscle tissue
skeletal muscle
Light mirror structure
Long cylindrical shape with few branches Multiple nuclei, dozens or even hundreds, with oblate oval nuclei The sarcoplasm (eosinophilic) contains myofibrils arranged parallel to the long axis of the muscle fiber.
Sarcomere
A section of myofibril between two adjacent Z lines
1/2I belt A belt 1/2I belt
Sarcomere is the basic structural and functional unit of myofibrils and forms the structural basis for contraction and relaxation of skeletal muscle fibers.
Electron microscope structure
myofibrils
Thin myofilaments
actin
double helix chain
Tropomyosin
Two double helix polypeptide chains
Troponin
TnT - troponin attaches to the tropomyosin molecule via TnT TnI - inhibits the interaction between actin and myosin TnC - combines with Ca ions
Thick myofilament
myosin
There is ATPase in the head
transverse tubule
The basement membrane is depressed toward the stroma
Can transmit the excitement of the basement membrane to the sarcomere
Sarcoplasmic reticulum (sarcoplasmic reticulum)
Specialized smooth endoplasmic reticulum
Longitudinal tubules - two adjacent transverse tubules form a network of interconnected tubules that surround the myofibrils longitudinally
Terminal cistern—a circular sac with enlarged sarcoplasmic reticulum on both sides of the transverse tubule
myocardium
Light mirror structure
Short cylindrical, branched The nucleus is oval and centered, and some have double nuclei. Muscle is rich, concentrated at both ends of the nucleus Horizontal lines are not obvious
Electron microscope structure
Myofibrils are not obvious The transverse tubule is short and thick, located at the level of the Z line The sarcoplasmic reticulum is sparse, the longitudinal tubules are underdeveloped, the terminal cisterns are small and few, and the doublets The intercalary disk is located at the Z line level, with intermediate connections and desmosomes in the horizontal connection, and gap connections in the longitudinal connection. Atrial muscle fibers have contractile and endocrine functions
smooth muscle
The macula densa (inner surface of the basement membrane) and the dense body (cytoplasm) are connected by intermediate filaments
no myofibrils
gap junction
Myoglobin
Myoglobin is a small molecule protein with a molecular structure similar to hemoglobin and has the function of transporting and storing oxygen within muscle cells.