ZOOL 2003 - Human Anatomy and Physiology I � Course Instructor: Course Instructor: � Dr. Martin Huss Dr. Martin Huss � Chapter 1: Chapter 1: � Introduction to Introduction to Human Anatomy Human Anatomy and Physiology. and Physiology.
Overview of Human Anatomy Overview of Human Anatomy and Physiology and Physiology � Anatomy Anatomy – – the study of the the study of the structure structure of the body and of the body and � the relationships of the various parts of the body the relationships of the various parts of the body � Gross or macroscopic (visible structures) Gross or macroscopic (visible structures) � � Microscopic (cytology, histology) Microscopic (cytology, histology) � � Developmental Developmental – – structural changes over time structural changes over time � (embryology) (embryology) � Physiology Physiology – – the study of the the study of the functions functions of the parts of of the parts of � the body, includes specific organ systems and the body, includes specific organ systems and molecular and cellular levels (neurophysiology, molecular and cellular levels (neurophysiology, cardiovascular physiology, electrophysiology) cardiovascular physiology, electrophysiology)
Levels of Structural Levels of Structural Organization Organization Chemical – – atoms combine to form molecules atoms combine to form molecules Chemical Cellular – – molecules interact to make up cells molecules interact to make up cells Cellular Tissue – – cells are grouped into tissue cells are grouped into tissue Tissue Organ – – tissues compose organs tissues compose organs Organ Organ system – – organs function together to organs function together to Organ system form organ systems form organ systems Organism (individual) – – made up of the organ made up of the organ Organism (individual) systems systems
Levels of Structural Levels of Structural Organization Organization
Basic Structures of the Basic Structures of the Human Body Human Body � Tissue Tissue – – A group of similar cells that A group of similar cells that � performs a specific function performs a specific function � Organ Organ – – A structure consisting of a group A structure consisting of a group � of tissues with a specialized function of tissues with a specialized function � Organ System Organ System – – Organs working together Organs working together � to allow the body to perform a function. to allow the body to perform a function.
Organ Systems Organ Systems � Integumentary system Integumentary system � � Forms the external body covering Forms the external body covering � � Composed of skin, sweat glands, oil glands, Composed of skin, sweat glands, oil glands, � hair, and nails hair, and nails � Protects deep tissues from injury and Protects deep tissues from injury and � synthesizes vitamin D synthesizes vitamin D
Organ Systems of the Body Organ Systems of the Body � Skeletal system Skeletal system � � Composed of bone, cartilage, and ligaments Composed of bone, cartilage, and ligaments � � Protects and supports body organs Protects and supports body organs � � Provides the framework for muscles Provides the framework for muscles � � Site of blood cell formation Site of blood cell formation � � Stores minerals Stores minerals �
Organ Systems of the Body Organ Systems of the Body � Muscular system Muscular system � � Composed of muscles and tendons Composed of muscles and tendons � � Allows manipulation of the environment, Allows manipulation of the environment, � locomotion, and facial expression locomotion, and facial expression � Maintains posture Maintains posture � � Produces heat Produces heat �
Organ Systems of the Body Organ Systems of the Body � Nervous system Nervous system � � Integrates and coordinates body functions Integrates and coordinates body functions � � Composed of the brain, spinal column, and Composed of the brain, spinal column, and � nerves nerves � Is the fast Is the fast- -acting control system of the body acting control system of the body � � Responds to stimuli by activating muscles and Responds to stimuli by activating muscles and � glands glands
Organ Systems of the Body Organ Systems of the Body � Endocrine System Endocrine System � � Integrates and coordinates body functions Integrates and coordinates body functions � � Includes all glands that secrete chemical Includes all glands that secrete chemical � messengers, also called hormones messengers, also called hormones � Hormones alter the metabolism of target cells Hormones alter the metabolism of target cells � � Examples of organs of the ES are the Examples of organs of the ES are the � pituitary, thyroid, parathyroid, adrenal pituitary, thyroid, parathyroid, adrenal glands, pancreas, ovaries, testes, pineal glands, pancreas, ovaries, testes, pineal gland, and thymus gland gland, and thymus gland
Organ Systems of the Body Organ Systems of the Body � Cardiovascular system Cardiovascular system � � Composed of the heart and blood vessels Composed of the heart and blood vessels � � The heart pumps blood The heart pumps blood � � The blood vessels transport blood throughout The blood vessels transport blood throughout � the body the body
Organ Systems of the Body Organ Systems of the Body � Lymphatic system Lymphatic system � � Composed of red bone marrow, thymus, Composed of red bone marrow, thymus, � spleen, lymph nodes, and lymphatic vessels spleen, lymph nodes, and lymphatic vessels � Picks up fluid leaked from blood vessels and Picks up fluid leaked from blood vessels and � returns it to blood returns it to blood � Disposes of debris in the lymphatic stream Disposes of debris in the lymphatic stream � � Houses white blood cells involved with Houses white blood cells involved with � immunity immunity
Organ Systems of the Body Organ Systems of the Body � Respiratory system Respiratory system � � Composed of the nasal cavity, pharynx, trachea, Composed of the nasal cavity, pharynx, trachea, � bronchi, and lungs bronchi, and lungs � Keeps blood supplied with oxygen and removes Keeps blood supplied with oxygen and removes � carbon dioxide carbon dioxide
Organ Systems of the Body Organ Systems of the Body � Digestive system Digestive system � � Composed of the oral cavity, esophagus, Composed of the oral cavity, esophagus, � stomach, small intestine, large intestine, stomach, small intestine, large intestine, rectum, anus, and liver rectum, anus, and liver � Breaks down food into absorbable units that Breaks down food into absorbable units that � enter the blood enter the blood � Eliminates indigestible foodstuffs as feces Eliminates indigestible foodstuffs as feces �
Organ Systems of the Body Organ Systems of the Body � Urinary system Urinary system � � Composed of kidneys, ureters, urinary bladder, Composed of kidneys, ureters, urinary bladder, � and urethra and urethra � Eliminates nitrogenous wastes from the body Eliminates nitrogenous wastes from the body � � Regulates water, electrolyte, and pH balance of Regulates water, electrolyte, and pH balance of � the blood the blood
Organ Systems of the Body Organ Systems of the Body � Male reproductive system Male reproductive system � � Composed of prostate gland, penis, testes, Composed of prostate gland, penis, testes, � scrotum, and ductus deferens scrotum, and ductus deferens � Main function is the production of offspring Main function is the production of offspring � � Testes produce sperm and male sex hormones Testes produce sperm and male sex hormones � � Ducts and glands deliver sperm to the female Ducts and glands deliver sperm to the female � reproductive tract reproductive tract
Organ Systems of the Body Organ Systems of the Body � Female reproductive system Female reproductive system � � Composed of mammary glands, ovaries, Composed of mammary glands, ovaries, � uterine tubes, uterus, and vagina uterine tubes, uterus, and vagina � Main function is the production of offspring Main function is the production of offspring � � Ovaries produce eggs and female sex Ovaries produce eggs and female sex � hormones hormones � Remaining structures serve as sites for Remaining structures serve as sites for � fertilization and development of the fetus fertilization and development of the fetus � Mammary glands produce milk to nourish the Mammary glands produce milk to nourish the � newborn newborn
Organ System Organ System Interrelationships Interrelationships � The integumentary system protects the body The integumentary system protects the body � from the external environment from the external environment � Digestive and respiratory systems, in contact Digestive and respiratory systems, in contact � with the external environment, take in with the external environment, take in nutrients and oxygen nutrients and oxygen
Organ System Organ System Interrelationships Interrelationships � Nutrients and Nutrients and � oxygen are oxygen are distributed by distributed by the blood the blood � Metabolic wastes Metabolic wastes � are eliminated are eliminated by the urinary by the urinary and respiratory and respiratory systems systems
Recommend
More recommend
