chapter 1 study guide
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Anatomy Bowl Prep Intro Structure & Function of the Body by Lisa Sappenfield. Chapter 1 study guide. Know and understand these terms. Structural Levels of Organization (define and understand). Atoms - PowerPoint PPT PresentationTRANSCRIPT
Anatomy Bowl Prep Intro Structure & Function of the Body by Lisa Sappenfield
Know and understand these terms.
Atoms The smallest particle of a pure substance that still
has the chemical properties of that substance; composed of protons, neutrons, and electrons
Molecules Particle of mater composed of one of more
smaller units called atoms Cell
The basic biological and structural unit of the body consisting of a nucleus surrounded by cytoplasm and enclosed by a membrane
Tissue A group of similar cells that perform a common function
Organ Group of special tissues that performs a special function
Systems A group of organs arranged so that the group can
perform a more complex function than any one organ can perform alone
Body Unified and complex assembly of structurally and
functionally interactive components
Supine & Prone Supine means that the body is facing upward Prone means that the body is facing downward
Superior & Inferior Superior means towards the head Inferior means below or towards the feet
Anterior & Posterior Anterior means front or in front of Posterior means back or in the back of
Medial & Lateral Medial means towards the midline of the body Lateral means away from the midline of the
body Proximal & Distal
Proximal means closest to the trunk of the body Distal means farthest away from the trunk of
the body Superficial & Deep
Superficial means nearer to the surface Deep means farther away from the surface
Sagittal plane Lengthwise plane that divides a structure into right
and left sections Midsagittal plane
Sagittal plane that divides the body into two equal halves
Frontal plane Lengthwise plane that divides a structure into an
anterior and posterior section Transverse plane
Horizontal plane that divides a structure into upper and lower sections
Ventral cavity Thoracic▪ Mediastinum▪ midportion of thoracic cavity; heart, trachea located here
▪ Pleural cavities▪ right and left lungs located here
Abdominopelvic cavity▪ Abdominal cavity contains stomach, small intestine, liver,
gallbladder, pancreas, spleen, and most of the large intestine▪ Pelvic cavity contains reproductive organs, urinary bladder,
and the remaining large intestine including the rectum Dorsal cavity
Cranial cavity contains brain Spinal cavity contains spinal cord
Homeostasis Maintaining internal stability Survival depends on homeostasis
Feedback Loops Positive-stimulatory▪ Example: Increasingly rapid sticking together of blood
cells called platelets to form a plug that brings formation of a blood clot. (The process increases rapidly until the positive feedback loop is stopped by formation of a clot)
Negative-oppose or negate a change in the controlled condition▪ Example: excretion of larger than usual volumes of urine
when the volume of fluid in the body is greater than the normal, ideal amount.