EVALUATED QUESTIONS AND
ANSWERS
There are two main "branches" of Human biology: -
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1) Anatomy this deals with the structure (morphology-
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shape) of the body and its parts, in other words, what
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things are called and what they look like.
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2) Physiology this studies the function of these parts or
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asks the question, "how do they work"? What is their
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job?
Human Biology: Structure and Function - CORRECT ANSWER-
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In Human Biology the STRUCTURE of something is often very cl
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osely related to its FUNCTION in the human body -
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kFor example Nerve cells are very long in structure because their f
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unction is to carry electrical signals from one area of the body to a
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nother - they are rather like long electrical cables.
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The human body is the sum of its parts and these parts can be stu
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died at 4 different "sizes" or "levels of organization." -
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kCORRECT ANSWER-- Cell k k
- Tissue
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- Organ
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- Organ System
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Cells - CORRECT ANSWER-
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CELLS are the smallest basic living unit in your body.
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, Tissue - CORRECT ANSWER- k k k
2. TISSUE : A tissue in biology is defined as: many cells of the SA
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ME TYPE that are joined together to do an important function.
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4 Types of Tissue to Learn - CORRECT ANSWER-
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1. EPITHELIAL TISSUE -
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This tissue makes outer and inner coverings of the body -
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for example skin cells and the cells that line your airways.
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2. CONNECTIVE TISSUE -
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This holds and supports and joins other tissues together -
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bone, cartilage and blood are examples to learn.
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3. NERVOUS TISSUE -
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this tissue is special in that it can transmit electrical signals (calle
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d "impulses") around the body. These electrical signals "run" the
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muscles and many other organs. This happens through NEURO
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NS
4. MUSCLE TISSUE - there are * two types of muscle tissue:
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*Voluntary (muscles that you can control -
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sometimes referred to as SKELETAL muscle because these mu
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scles move your skeleton) And *Involuntary ( muscles that you ha
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ve no control over -
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the involuntary muscle tissue is further broken down into CARDI
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AC (heart muscle) and SMOOTH muscle (muscle that works to ru
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n your digestive system
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Organ - CORRECT ANSWER-3. ORGAN: Defined as -
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kTwo or more different tissue
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types joined together to do an important function
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— Skin, Heart, liver, kidneys, lungs for example
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Organ System - CORRECT ANSWER- k k k k
Organ system: Defined as - k k k k
when a 2 or more organs function together to do an important fun
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ction:
Example: cardiovascular system, digestive system, nervous syst
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em, reproductive system.
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