Tissues, organs, & organ systems (article) | Khan Academy
Learn about the main tissue types and organ systems of the body and how they work together.
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Anatomy of a neuron. Overview of neuron structure and function. The membrane potential. Electrotonic and action potentials. Saltatory conduction in neurons. Neuronal synapses (chemical) The synapse. Neurotransmitters and receptors. Q & A: Neuron depolarization, hyperpolarization, and action potentials.
Tissues - Khan Academy
Tissues | Class 9 Biology (India) | Science | Khan Academy. Course challenge. Test your knowledge of the skills in this course. Start Course challenge.
Intro to cells (article) | Khan Academy
Lesson 1: Introduction to cells. Scale of cells. Cell theory. Intro to cells. Microscopy.
Meristematic tissues - Khan Academy
Cork is the thick layer found on the outside of a tree bark. It's made up of several layers of old, dead tissue.
Organization in the human body (video) | Khan Academy
These subsystems are groups of cells that work together to form tissues, and organs that are specialized for particular body functions. Organs work together in organ systems to carry out specific functions for the organism.
Tissues - Khan Academy
Tissues | UP Class 9th Science | Khan Academy. If you're seeing this message, it means we're having trouble loading external resources on our website. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. 12 units · …
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Carbon dioxide and water are inputs of photosynthesis. These inputs come from the environment. Oxygen and sugars are outputs of photosynthesis. The oxygen is released into the environment. The sugars can provide chemical energy. This energy can be …
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Learn about the structure and function of DNA, including its role in inheritance and genetic information storage.
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Health and medicine. Course: Health and medicine > Unit 11. Lesson 3: Skeletal system introduction. Skeletal structure and function. Microscopic structure of bone - the Haversian system. Cellular structure of bone. Skeletal endocrine control. …