An Intro To The Human Body Flashcards
Anatomy VS Physiology
anatomy is the study of structure whereas physiology is the study of how body parts function
Embryology is the study of
the first eight weeks of development after fertilization of a human egg.
Developmental biology is the study of
the complete development of an individual from fertilization to death
Cell biology is the study of
cellular structure and functions
Histology is the study of
microscopic structure of tissues
Gross anatomy is the study of
structure that can be examined without a microscope
Systemic anatomy is the study of
structure of specific systems of the body such as the nervous or respiratory systems
Regional anatomy is the study of
specific regions of the body such as the head or the chest
Surface anatomy is the study of
surface markings of the body to understand internal anatomy through visualization and palpation
Imaging anatomy is the study of
internal body structure that can be visualized with techniques such as X-rays, MRI, CT scan, and other technologies for clinical analysis and medical intervention
Pathological anatomy is the study of
structural changes (gross to microscopic) associated with disease
Molecular physiology is the study of
functions of individual molecules such as proteins and DNA
Neurophysiology is the study of
functional properties of nerve cells
Endocrinology is the study of
hormones (chemical regulators in the blood) and how they control body function
Cardiovascular physiology is the study of
functions of the heart and the blood vessels
Immunology is the study of
the body’s defenses against disease-causing agents
Respiratory physiology is the study of
functions of the air passageways and lungs
Renal physiology
function of the kidney
Exercise physiology is the study of
changes in cell and organ functions due to muscular activity
Pathophysiology is the study of
functional changes associated with disease and aging
Level of Structural Organization
- chemical level
- cellular level
- tissue level
- organ level
- system level
- organismal level
The Components of the Integumentary System
skin, and associated structures such as hair, fingernails, and toenails, sweat gland and oil gland
The Functions of the Integumentary System
protects the body; helps regulate body temperature; eliminates some wastes; helps make vitamin D; detects sensations such as touch, pain, warmth, and cold; stores fat and provide insulation
The Components of the Skeletal System
bones and joints of the body and their associated cartilages
The Functions of the Skeletal System
supports and protects the body; provides surface area for the muscle attachments; aids body movement; houses cells that produce blood cells; stores minerals and lipids.
The Components of the Muscular System
skeletal muscle tissue-muscle usually attached to bones (other muscle tissues include smooth and cardiac)
Functions of the Muscular System
participates in body movements, such as walking; maintains posture; produces heat
Components of the Nervous System
brain, spinal cord, nerves, and special sense organs such as eyes and ears
Functions of the Nervous System
generates action potentials (nerve impulses) to regulate body activities; detects changes in the body’s internal and external environment, interprets changes, and responds by causing muscular contractions and glandular secretion
Components of the Endocrine System
hormone-producing glands, pineal gland, hypothalamus, pituitary glands, thymus, thyroid gland, parathyroid glands, adrenal gland, pancreas, ovaries, and testes and hormone-producing cells in several other organs
Functions of the Endocrine System
regulates body activities by releasing hormones (chemical messengers transported in blood from an endocrine gland or tissue to target organ)
Components of the Cardiovascular System
blood, heart, and blood vessels
Functions of the Cardiovascular System
the heart pumps blood through blood vessels; blood carries oxygen and nutrients to the cells and carbon dioxide and wastes away from cells and helps regulate acid-bases balance, temperature, and water content of body fluids; blood components help defend against disease and repair damaged blood vessels
Components of the Lymphatic System and Immunity
lymphatic fluid and vessels; spleen, thymus, lymph nodes, and tonsils; cells that carry out immune responses (B cells, T cells and others)
Function of the Lymphatic System and Immunity
returns proteins and fluid to blood; carries lipids from the gastrointestinal tract to blood; contains sites of maturation and proliferation of B cells and T cells that protect against disease-causing microbes
Components of the Respiratory System
lungs and air passageways such as the pharynx(throat), larynx(voice box) trachea(windpipe) and bronchial tubes leading into and out of the lungs
Functions of the Respiratory System
transfer oxygen from inhaled air to blood and carbon dioxide from the blood to exhaled air; help regulate the acid-base balance of body fluid; air flowing out of lungs through vocal cords produces sounds.
Components of the Digestive System
organ of the gastrointestinal tract, a long tube that includes the mouth, pharynx(throat), esophagus(food tube), stomach, small and large intestines, and anus; also includes accessory organs that assist in the digestive processes such as salivary glands, liver, gallbladder, and pancreas
Functions of the Digestive System
achieves physical and chemical breakdown of food; absorbs nutrients; eliminates solid wastes
Components of the Urinary System
kidneys, ureters, urinary bladder, and urethra
Function of the Urinary System
produces, stores, and eliminates urine; eliminates wastes and regulates volume and chemical composition of blood; helps maintain the acid-base balance of body fluids; maintains body mineral balance; helps regulate production of red blood cells
Components of the Reproductive System
gonads (testes in males and ovaries in women) and associated organs (uterine tubes or fallopian tubes, uterus, vagina, and mammary gland in females and epididymis, ductus or vas, deferens, seminal vesicles, prostate and penis in males)
Function of the Reproductive System
gonads produce gametes(sperm and oocytes) that unite to form a new organism; gonads also release hormones that regulate reproduction and other body processes; associated organs transport and stores gametes: mammary glands produce milk
What is the Basic Life Processes
all living things have certain characteristics that distinguish them from nonliving things
life processes in humans include metabolism, responsiveness, movement, growth, differentiation, and reproduction
What is Homeostasis
homeostasis is a condition of equilibrium, or balance, in the body’s internal environment
homeostasis is maintained by the body’s regulatory processes
Body Fluids & Homeostasis
the survival of our body cells is dependent on the precise regulation of the chemical composition of their surrounding fluid
this fluid is known as extracellular fluid
What Causes Imbalance in Homeostasis
homeostasis imbalances occur because of disruption from external or internal environments
What happens When There is an Homeostatic Imbalances
when disrupted it may result in disease, disorder, or even death
factors such as your genetic make-up, the air you breathe, the food you eat, and the thoughts you think can all affect your health
What is the Body Positions
anatomical position is a standardized method of observing or imaging the body that allows precise and consistent anatomical reference
a person stands erect, facing the observer, the upper extremities are placed at the sides, and the palms of the hands are turned forward, and feet are flat on the flood
What are Directional Terms
directional terms are used to precisely locate one part of the body relative to another
What is Superior
towards the head, or upper part of a structure
What is Inferior
away from the head, or lower part of a structure
What is Anterior
Nearer to or at the front of the body
What is Posterior
nearer to or at the back of the body
What is Medial
nearer to the midline (an imaginary vertical line that divides the body into equal right and left sides)
What is Lateral
farther from the midline
What is Ipsilateral
on the same side of the body as another structure
What is Contralateral
on the opposite side of the body from another structure
What is Proximal
nearer to the attachment of a limb to the trunk; father from the origination of a structure
What is Distal
farther from the attachment of a limb to the trunk; father from the origination of a structure
What is Superficial
toward or on the surface of the body
What is Deep
away from the surface of the body
What are Planes
planes are imaginary flat surfaces that are used to divide the body
What is a Frontal plane
divides the body in half
What is the Parasagittal Plane
unequal left and right sides
What is the Transverse Plane
body divided in half horizontally
What is the Midsagittal Plane
divides the body into qual left and right sides
What is an Oblique Plane
divides at an angle
What are Body Cavities
body cavities are spaces within the body that helps protect, separate, and support internal organs
Cranial Cavities
formed by cranial bones and contains brain
Vertebral Canal
formed by vertebral column and contains spinal cord and the beginnings of spinal nerves
Thoracic Cavity
contains pleural and pericardial cavities an the mediastinum
Pleural Cavity
a potential space between the layers of the pleura that surrounds the lungs
Pericardium Cavity
a potential space between the layers of pericardium that surrounds the heart
Mediastinum
the central portion of the thoracic cavity between the lungs; extends from the sternum to vertebral columns and from the first rib to the diaphragm; contains heart, thymus, esophagus, trachea, and several large blood vessels
Abdomonipelvic Cavity
subdivides into abdominal and pelvic cavities
Abdominal Cavity
contains stomach, spleen, liver, gallbladder, small intestine, and most of the large intestine; the serous membrane of the cavity is the peritoneum
Pelvic Cavity
contains urinary bladder, portion of large intestine, and internal organ of reproduction
What is the Serous Membranes
serous membranes are thin, double-layered membranes that cover the viscera within the thoracic and abdominal cavities and also line the walls of the thorax and abdomen
visceral layer
parietal layer
serous membranes reduce friction
Serous Membranes in the Abdominal Cavity
the peritoneum covers many of the abdominal organs
retroperitoneal the classification some organs are given because they are not surrounded by the peritoneum, rather, they are posterior to it
What are the Six Region
right hypochondriac region
right lumbar region
right inguinal region
epigastric region
umbilical region
hypogastric region
left hypochondriac region
left lumbar region
left inguinal region
What are the 4 Quadrant
right upper quadrant
right lower quadrant
left upper quadrant
left lower quadrant
What is the Medical Imaging
medical imaging involves techniques that allow physicians to view images of the human body
this allows physicians to diagnose anatomical and physiological abnormalities