Chapter 1 Flashcards
Describe the cellular level
The smallest unit of living things
What does the lymphatic system consist of?
Spleen, lymph nodes, thymus, bone marrow, and lymphatic vessels
What does the lymphatic system do?
Pick up fluid leak from blood vessels and return it to the blood
What does the cardiovascular system do?
Pumps and transports blood
What is the urinary system in charge of?
Eliminating nitrogenous waste
What is the function of the integumentary system?
Separates the bodies internal environment from the external environment
What makes up the skeletal system?
Bones, cartilage, and ligaments
What is the study of how the body parts work and carry out their life sustaining activities
Physiology
What is the digestive system comprised of?
Intestine, liver, stomach, esophagus, and oral cavity
Interactions among molecules, such as water, DNA and proteins is considered what level of structural organization?
Chemical
What body system functions to produce blood cells?
Skeletal
What is the study of large body structures visible to the naked eye?
Gross or macroscopic anatomy
Blood clotting when the lining of a blood vessel is injured is an example of what type of feedback
Positive feedback mechanism
What makes a feedback mechanism positive?
Because the change that results proceeds in the same direction as the initial change.
And positive feedback, the result or response enhances the original stimulus so that the response is accelerated
What happens during negative feedback?
The body shuts off the original stimulus or reduced its intensity
What is the purpose of negative feedback?
To prevent sudden severe changes within the body
What are the 3 components of homeostatic control mechanisms
Receptor, control center, and effector
Carbohydrates are found primarily in what type of food?
Plant derived
What does the effector do in a negative feedback system??
Is the component that brings about change
Which cavity contains the lungs and heart?
Thoracic
The ventral body cavity is subdivided into which sets of cavities?
Thoracic and Abdominopelvic cavities
Which serous membrane layer is closest to the surface of the heart?
Visceral pericardium
Serous membranes line the cavity walls and surfaces of organs that are contained within which cavities?
Abdominopelvic & thoracic
( ventral body cavity)
What are the six levels of structural organizational?
Chemical-atoms combine to form molecules
Cellular- cells are made up of molecules
Tissue-cells working for shared purpose
Organ level-tissues working together
Organ system-organs working together
Organismal-multiple organ systems
What is homeostasis?
Maintaining stable body conditions
What are the three planes of section?
Median, frontal and transverse
What are the two major body cavities?
Dorsal and ventral
(Cranial & vertebral) (thoracic & abdominolpelvic)
What organs are housed in the abdominal pelvic?
Digestive,reproductive, and urinary organs
What does serous fluid do?
Reduce friction between layers
