referred to as hormones which act as “chemical messengers” in an effort to regulate particular bodily functions such as metabolism and growth. These hormones are produced by the pancreas‚ thyroid‚ pituitary‚ pineal‚ and adrenal glands which are also referred to as the endocrine system. Hormones are additionally produced in the ovaries in women and the testes in men. The secretions of particular hormones assist the body in maintaining a state of balance or homeostasis. When one or more hormones within the
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HORMONES Hormones are a class of regulatory biochemicals produced in all multicellular organisms by glands‚ and transported by the circulatory system to a distant target organ to coordinate its physiology and behavior. They serve as a major form of communication between different organs and tissues. Hormones regulate a variety of physiological and behavioral activities‚ including digestion‚ metabolism‚ respiration‚ tissue function‚ sensory perception‚ sleep‚excretion‚ lactation‚ stress‚ growth and
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Chapter 4 Study Guide Bio 169 • Individual body cells are specialized -Each type performs specific functions that help maintain homeostasis • Tissues are groups of cells that are similar in structure and perform a common function • Histology – study of tissues PRIMARY TISSUE TYPES: 1) Epithelial Tissue (or epithelium) is a sheet of cells that covers a body surface or lines a body cavity Forms boundaries Occurs in the body as covering and lining epithelium and glandular epithelium
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Hormones Every living organism on Earth has some sort of organ system. For example‚ humans have their endocrine system. The endocrine system is a group of organs that release different biological substances called hormones. There are vast amounts of hormones‚ which means there are multiple uses that are necessary for survival. Hormones have multiple roles in the human body. For example‚ they assure that growth‚ development and maturation occurs properly and on time. Also hormones‚ help control
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Plant hormones are specialized chemical substances produced by plants. They are the main internal factors controlling growth and development. Hormones are produced in one part of a plant and transported to others‚ where they are effective in very small amounts. Depending on the target tissue‚ a given hormone may have different effects. Plant hormones play an integral role in controlling the growth and development of plants. A plant hormone is generally described as an organic compound synthesized
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Epithelial tissue protects your body from moisture loss‚ bacteria‚ and internal injury. There are two kinds of epithelial tissues: Covering and lining epithelium covers or lines almost all of your internal and external body surfaces; for example‚ the outermost layer of your skin and other organs‚ and the internal surface lining of your lymph vessels and digestive tract. Glandular epithelium secretes hormones or other products such as stomach acid‚ sweat‚ saliva‚ and milk. Connective tissue generally
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corpuscles are found in the papillary region of the dermis of the skin. When nothing is touching the skin‚ a voltage difference known as the (1) ___________ _____________ _____________ exists across the plasma membrane. Leakage channels‚ also called passive channels‚ allow the movement of potassium (and sodium) across the membrane. Due to the electrochemical gradient‚ (2) ___________________ (ion) diffuses out of the cell. Because of this and because proteins that are large‚ non-diffusible anions
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Date______________ Period____ Tissues Lab Directions: This lab is broken down into three sections: Epithelial Tissue‚ Connective Tissue‚ and Muscle & Nerve Tissue. For each section‚ read the background and answer any questions before you come to class‚ then in class sketch the specimens listed under each sketch circle. For your sketches‚ include the total magnification under which you viewed the specimen and be very detailed in your sketch. Epithelial Tissue Background Functions of Epithelium
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Question: Describe five different organelles and their functions. Explain the similarity and differences between eukaryotic cells and prokaryotic. All eukaryotic cells‚ whether from animals‚ plants‚ protists‚ and fungi‚ are fundamentally similar to one another but different from prokaryotic cell. A eukaryotic cell contains various other organelles‚ which perform specific functions in the cell. These organelles can be organized into few basic functional groups such as genetic control‚ distribution
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Heredity and Hormones The Influences of heredity and hormones on human behavior The Influence of Heredity and Hormones on Human Behavior Human behavior has always been fascinating to many people. Scientists have long studied the factors that cause and contribute too many different types of human behaviors. The Effects Heredity Has On Human Behavior Many different traits are passed along to people through genetics. Some of these traits include the basics such as eye color‚ height‚ and
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