Transcript sc5 tissues 2013

 THE ORGANIZATION OF CELLS
1. CELLS: BASIC UNIT OF ALL LIFE
2. TISSUES: GROUPS OF SIMILAR CELLS THAT WORK TOGETHER
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MUSCLE TISSUE: ALLOWS MOTION, CAN ONLY CONTRACT
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CONNECTIVE TISSUE: SUPPORTS AND BINDS BODY PARTS (BONES, TENDONS)
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EPITHELIAL TISSUE: COVERS THE ORGANS AND BODY (SKIN)
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NERVE TISSUE: ALLOWS COMMUNICATION, THOUGHT PROCESSES
3. ORGANS: DIFFERENT TISSUES COMBINE TO PERFORM ONE FUNCTION
 HEART PUMPS BLOOD
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MADE OF BLOOD, CONNECTIVE, MUSCLE, NERVE, EPITHELIAL TISSUES
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HARDEST WORKING MUSCLE IN THE BODY
SKIN MADE OF ALL 4 MAJOR TISSUES
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COVERS AND PROTECTS BODY
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CONTROLS TEMPERATURE AND SENSES TOUCH
4. ORGAN SYSTEMS: DIFFERENT BUT RELATED ORGANS THAT PERFORM SPECIFIC FUNCTION
 ex.: CIRCULATORY SYSTEM: INCLUDES HEART, BLOOD AND BLOOD VESSELS
 Ex.: SKELETAL SYSTEM: CONSISTS OF BONES, LIGAMENTS
5. ORGANISMS: A LIVING THING MADE OF ORGANS SYSTEMS
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NERVE TISSUE: CONDUCTS INFORMATION USING IMPULSES
1.
ALLOWS THE SENSING OF SURROUNDINGS
2.
ALLOWS REACTION TO SURROUNDINGS
3.
ALLOWS THOUGHT
NERVOUS SYSTEM: COMPRISED OF BRAIN, SPINE AND NERVES
1.
CHAINS OF NERVE CELLS FORM LONG NERVES
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COMMUNICATE INFORMATION
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NERVES CONDUCT MESSAGES (IMPULSES) MADE OF ELECTRICAL SIGNALS
2. SPINAL CORD: ROPE-LIKE BUNDLE OF NERVES ALONG THE BACK
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CONNECTS ALMOST ALL PARTS OF THE BODY TO THE BRAIN
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BONY SPINAL COLUMN PROTECTS DELICATE NERVES
3. BRAIN: TRILLIONS OF NERVE CELLS THAT WORK TOGETHER
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RECEIVES AND INTERPRETS INFORMATION FROM SENSES
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DECIDES ON RESPONSES TO SENSORY INFORMATION
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SENDS RESPONSES TO THE MUSCULAR SYSTEM, etc.
 THE FIVE SENSES: SIGHT, SMELL, TASTE, HEARING, AND TOUCH
1. EYE: THE ORGAN OF SIGHT
 PUPIL: DARK OPENING OF THE EYE
 IRIS: COLORS PORTION, OPENS AND CLOSES TO ADJUST LIGHT ENTERING EYE
 LENS: CHANGES SHAPE TO FOCUS (TINY MUSCLES THINS OR THICKEN LENS)
 RETINA: LIGHT SENSITIVE REDDISH LINING OF EYE
 HAS COLOR SENSING CONE-SHAPED CELLS DIRECTLY BEHIND PUPIL
 BLACK-WHITE SENSING ROD-SHAPED CELLS AROUND CONES
 OPTIC NERVE SENDS INFORMATION TO BRAIN
 SOME PEOPLE LACK CONES FOR RED, SELDOM LACK GREEN OR BLUE CONES
2. EAR: THE ORGAN OF HEARING
OUTER EAR: CAPTURES AND FUNNELS SOUND WAVES INTO EAR
 EAR CANAL: TUBE THAT LEADS TO EARDRUM
 EARDRUM: VERY THIN MEMBRANE THAT VIBRATES WHEN STRUCK BY SOUNDS
 MIDDLE EAR BONES (HAMMER, ANVIL, STIRRUP) AMPLIFY VIBRATIONS
 INNER EAR(COCHLEA): SNAIL-SHAPED, FLUID-FILLED STRUCTURE
 CONTAINS 1,000s OF TINY NERVE ENDINGS (ONE PER TONE HEARD)
 SENDS INFORMATION THROUGH AUDITORY NERVE TO BRAIN
THE FIVE SENSES: SIGHT, SMELL, TASTE, HEARING, AND TOUCH
3. NOSE: HAS OLFACTORY BULB THAT SENSES SMELLS
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SMELLS ARE THE MOLECULES (CHEMICALS) GIVEN OFF BY MANY SUBSTANCES
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OLFACTORY NERVE SENDS INFORMATION TO THE BRAIN
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SMELL IS THE MOST VARIABLE SENSE FROM PERSON TO PERSON
4. TONGUE: THE ORGAN OF TASTE
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TASTE BUDS: IN GROUPS OR “PITS” FOUND ON THE TONGUE
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EACH GROUP SENSES A PARTICULAR TYPE OF CHEMICAL
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4 PRIMARY TYPES OF TASTES: SWEET, SOUR, BITTER, SALTY plus MEATY
 THE FIVE SENSES: SIGHT, SMELL, TASTE, HEARING, AND TOUCH
5. SKIN: SENSE OF TOUCH- ALSO PROTECTS, REMOVES WASTES, HEAT
PART OF INTEGUMENTARY SYSTEM THAT INCLUDES HAIR AND FINGERNAILS
EPIDERMIS: OUTER, PROTECTIVE LAYERS OF DEAD SKIN CELLS
DERMIS: LIVING LAYERS OF SKIN
DERMIS: LIVING LAYERS OF SKIN
OIL GLANDS: MAKES OIL THAT LUBRICATES THE SKIN
HAIR FOLLICLES: GROW HAIR
SWEAT GLAND: PRODUCES SWEAT THAT EVAPORATES TO COOL BODY
HAIR MUSCLE: PULLS ON HAIR, CLOSES HAIR PORE (GOOSE BUMP)
FAT: INSULATES THE BODY (KEEPS HEAT IN)
SEVERAL TYPES OF SENSORY NERVE ENDINGS
(PAIN, TOUCH, HEAT, COLD, PRESSURE AND VIBRATION)
TINY BLOOD VESSELS (CAPILLARIES) SUPPLY BLOOD