human body
DESCRIPTION
Human Body SystemsTRANSCRIPT
The Human Body
• Chapters 34-39
Levels of Organization
Atom
Molecule
Cell
Organ Organ Systems
Organism
Protection, Support, Locomotion
• The Integumentary System – Skin, hair, nails– Epidermis, dermis,
subcutaneous– Proteins for protection– Maintains homeostasis
– sweating, chills
The Skeletal System
• Joints – where bones meet–Ball and socket–Pivot–Hinge
The Skeletal System
• Functions:–Protection of internal
organs–Production of blood
cells–Muscle attachment
The Muscular System
• Smooth muscle– Involuntary – can’t control – Stomach lining, intestines
• Skeletal muscle– Voluntary - control– Biceps, triceps, hamstrings
• Cardiac muscle– Involuntary– Heart muscle
Digestion and Regulation
• The Digestive System– Function – break down and absorb nutrients– Organs
• Mouth – digestive enzymes for carbs• Esophagus – tube to stomach• Stomach – HCl and digestive enzymes• Small Intestines – Absorption, high surface area• Large Intestines - Storage
– Accessory Organs• Liver – detoxification, produces bile• Gall bladder – stores bile• Appendix – vestigial structure
The Endocrine System
• Functions– Chemical messages in
the body– Works with nervous
system to control body• Hormones• Works by negative
feedback• Glands
The Paomnnehal Pweor Of The Hmuan Mnid.Aoccdrnig to a rscheearch as Cmabrigde
Uinervtisy,it deosn't mttaer in waht oredr the ltteers in a wrod are,the olny iprmoatnt tihng is taht the frist and lsat ltteer be in the
rghit pclae.The rset can be a taotl mses and you can sitll raed it wouthit porbelm. Tihs is bcuseae the huamn mnid deos not raed ervey lteter by
istlef, but the wrod as a wlohe.
The Nervous System
• Neurons - Nerve cells• Brain• Spinal Cord• The Senses– Vision– Hearing– Smell– Taste– Touch
Respiration, Circulation and Breathing
• Respiratory System– Trachea – cartilage covering– Bronchi – right and left– Lungs– Alveoli – location of gas exchange– Diaphragm – muscle for breathing
The Circulatory System• Blood– RBC’s – hemoglobin carries oxygen, anucleate– WBC’s – protect from disease– Platelets – clot blood, scab– Plasma – liquid part of blood
The Circulatory System• Blood Vessels– Arteries – carry blood
away from heart– Veins – carry blood to
the heart– Capillaries – connect
arteries to veins, diffusion
The Circulatory System• Heart– Heart is a muscle,
middle and a little to the left
– Protected by ribs, sternum, and vertebrate
– Atrium – right and left, small upper chambers
– Ventricles – right and left, large, lower
The Urinary System• Kidneys– Filter blood and
remove waste–Maintain
homeostasis• Ureters – carry waste
from kidney to bladder• Bladder – waste (urine)
storage• Urethra – takes urine
out of body
The Immune System
• Body’s internal protection• White blood cells• Antibodies