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Levels of Organization
These levels of organizationThe structured arrangement of biological systems. help throughout this class. For example, fibrocytes are cellsThe basic structural and functional units of life. in your body that make fibers like collagenA structural protein in the dermis that provides strength and elasticity.. Two cells working together forms at tissue. The body has only 4 tissue types: nervous, connective, muscle, and epithelial. Two separate tissues working together are called an organ. For example, your trachea or windpipe is made of epithelial tissue. It lines the open spaces that air fills. Cartilage is a connective tissue that holds the trachea open. The trachea, lungs, nasal cavityThe internal space behind the nose that filters, warms, and humidifies incoming air., and diaphragm are all organs. They work together to make an organ system. The respiratory systemThe organ system responsible for gas exchange (oxygen and carbon dioxide). is the example here. The human body has 11 organ systemsGroups of organs that work together to perform functions.. When considered all together, these 11 organ systems make up the functional units of the human organismA living individual made up of cells..
Organ Systems
These are the 11 organ systems of the human body. In A&P 1, we cover these 4: nervous system, muscular system, skeletal system, and the integumentary system. However, before we even look at an organ system, we will endure 4 weeks of basicA solution with a pH above 7, having a lower concentration of H⁺ ions. biology. Bummer. These more interesting organ systems are covered in A&P 2. Basically, you have to wade through the mud to get to the shore. Most of you can name almost all of these other systems. They include the circulatory system, the digestive system, the afore mentioned respiratory system, the urinary systemThe organ system that removes waste and maintains fluid balance., and the reproductive systems. These two systems over here are not so familiar to people. This green drainage system is the lymphatic system, which houses vessels and nodes for white blood cells. Down here is the hormone-producing organs of the endocrine systemThe organ system consisting of glands that secrete hormones to regulate body functions..
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Link to More MiniLectures on Anatomical Overview
Introduction to A&P
Sections, Planes, and Body Cavities
Anatomical Terms
Fluids of the Body
4 Membranes of the Body
Feedback Mechanisms
Gradients
List of terms
- organization
- cells
- collagen
- nasal cavity
- respiratory system
- organ systems
- organism
- basic
- urinary system
- endocrine system