Chapter 1, 2, 3 Exam Study Guide Flashcards
What is anatomy?
it is a Greek word for “a cutting up”. It examines the structures, or morphology, of body parts - their forms and organization.
What is physiology?
it is a Greek word for “relationship to nature.” It considers the functions of body parts - what they do and how they do it.
append-
to hang something. Appendicular: pertaining to the upper limbs and lower limbs.
cardi-
heart. Pericardium: membrane that surrounds the heart.
cerebr-
brain. Cerebrum: the largest part of the brain.
cran-
helmet. Cranial: pertaining to the part of the skull that surrounds the brain.
dors-
back. Dorsal: position toward the back of the body.
homeo-
same. Homeostasis: maintenance of a stable internal environment.
-logy
the study of. Physiology: the study of body functions.
meta-
change. Metabolism: chemical changes in the body.
nas-
nose. Nasal: pertaining to the nose.
orb-
circle. Orbital: pertaining to the portion of the skull that encircles the eye.
pariet-
wall. Parietal membrane: membrane that lines the wall of a cavity.
pelv-
basin. Pelvic cavity: basin-shaped cavity enclosed by the pelvic bones.
peri-
around. Pericardial membrane: membrane surrounds the heart.
pleur-
rib. Pleural membrane: membrane that encloses the lung within the rib cage.
-stasis
standing still. Homeostasis: maintenance of a stable internal environment.
super-
above. Superior: referring to a body part located above another.
-tomy
cutting. Anatomy: the study of structure, which often involves cutting or removing body parts.
Levels of organization of the human body
Subatomic particles, Atoms, Molecules, Macromolecule, Organelle, Cell, Tissue, Organ, Organ systems, Organism.
5 Maintenance of Life
Water, Food, Oxygen, Heat, and Pressure.
Homeostasis
the body’s ability to keep its internal conditions stable, such that its cells can survive.
Homeostatic mechanisms
the body’s self-regulating control systems. It has three components: Receptors, Control center, and Effectors.
Receptors
are the lookout. They provide information about specific conditions (stimuli) in the internal environment.
Control center
or decision-maker, which includes a set point (body temperature).
Effectors
muscles or glands take action and respond appropriately.
Negative feedback
is a process that activates the effectors that can return conditions to normal. As this happens, the deviation from the set point progressively lessens, and the effectors gradually shut down.
Positive feedback
the effector activity is initially increased rather than turned off. Positive feedback mechanisms usually produce unstable conditions, which might not seem compatible with homeostasis.
Axial portion
includes the head, neck, and trunk. The cranial cavity houses the brain. The vertebral canal contains the spinal cord and is surrounded by sections of the backbone. The thoracic cavity and the abdominopelvic cavity.
Appendicular portion
includes the upper and lower limbs.
Mediastinum
is located within the thoracic cavity, a region between the lungs. It houses the heart, esophagus, trachea, and thymus.
Thoracic cavity
are the lungs, heart, esophagus, trachea, and thymus.
Viscera
are the organs within the thoracic cavity and the abdominopelvic cavity.
Abdominopelvic cavity
includes an upper abdominal portion. It consists of the abdominal cavity and pelvic cavity.
Abdominal cavity
include the stomach, liver, spleen, gallbladder, kidneys, small intestines, and large intestines.
Pelvic cavity
contains the terminal end of the large intestine, the urinary bladder, and the internal reproductive organs.