Week 1 Quiz 1 – Chapter 1 Practice Flashcards
what is a molecule, cell, or organ that directly carries out a response to a stimulus called?
effector
what are the 3 common components of a feedback loop?
receptor, integrating (control) center, and effector
an ___ is composed of 2 or more tissue types, whereas ___ are microscopic structures in a cell
organ
organelle
what lists levels of human structure from the most complex to the simplest?
organ system, organ, tissue, cell, organelle
every member of these are species has the exact same anatomical structure?
false
the study of normal body structures is called ___
anatomy
what are examples of physiological gradients?
pressure
concentration
thermal
electrical
Blood glucose concentration rises after a meal and stimulates the pancreas to release the hormone insulin. Insulin travels in the blood and stimulates the uptake of glucose by body cells from the bloodstream, thus reducing blood glucose concentration. This is an example of _________.
negative feedback
homeostasis and occupying space are both characteristics unique to living things.
false
a hemoglobin level of 12 g/dL is normal for an adult female, but low for an adult male. What is this an example of?
physiological variation
list examples of body structures from simplest to most complex
protein, mitochondrion, adipocytes (fat cell), connective tissue, stomach
the change in size of the bone marrow (where blood cells are produced) as an infant matures is an example of ___, whereas the transformation of blood stem cells into white blood cells is an example of ___
growth
differentiation
during exercise, one generates excess heat and the body temperature rises. As a response, blood vessels dilate in the skin, warm blood flows closer to the body surface, and heat is lost. This is an example of ___
negative feedback
what are aspects that could result in physiological variation
age
gender
environment
physical activity
the study of how the body functions is called ___
physiology
