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Lisa Perez

Physiology Weeks 1-6

QuestionAnswer
What is homeostasis? is the concept of internal stability maintained by the body
What are negative feedback loops and provide an example of one negative feedback loops initiate a change by creating a response that is opposite of the disturbance/what caused homeostasis to be off. An example is when our body temperature increases. Hypothalamus triggers the activity of sweat glands to cool us down
What are the three classes of carbohydrates? Monosaccharides, disaccharides, and polysaccharides
What makes phospholipids different from other triglycerides? The phosphorus group is water soluble while the 2 fatty acids are lipid soluble so this means that this molecule can join two different chemical environments.
What are the 4 tissue types in the body? Epithelial, Connective Tissue, Muscle Tissue, and Nervous Tissue
What is the function of epithelial tissues? Covers and protects the body surfaces. Lines body cavities. Absorption, secretions, and excretions.
What is the function of connective tissue? Supports body structures and transports substances throughout the body
What is the function of muscle tissue? Produces body movement and produces heat
What is the function of nervous tissue? Communication between body parts.
What are the cell layers of the epidermis? Stratum Basale, stratum spinosum, stratum granulosum, stratum lucidum, and stratum corneum.
Describe stratum basale Bottom most layer of the epidermis
Describe stratum spinosum is the spiny layer due to the desmosomes that pull the plasma membranes together
Describe stratum granulosum granular look and closely packed together
Describe stratum lucidum flat, closely packed, and clear keratinocytes. Nuclei is absent
Describe stratum corneum superficial layer of the epidermis. Dead cells continuously being shed and replaced
List the functions of bones Support, protection, movement, mineral storage, and hematopoiesis
Created by: L.perez1
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