Chapter 1/2 Flashcards
Thermoregulation is a homeostatic regulatory mechanism that involves negative feedback. This means that
body temperature is normally allowed to vary slightly around a set point
When you exercise you generate excess heat and your body temperature rises. Blood vessels dilate in the skin, warm blood flows closer to the body surface, and you lose heat. This exemplifies
Negative feedback
The fact that most of us have five lumbar vertebrae, but some people have six and some have four is an example of ____________ variation among organisms.
anatomical
The ability to maintain relatively stable internal conditions is called ____________________.
homeostasis
Which of the following would you find covering the surface of the stomach?
Visceral peritoneum
Organs are made of tissues
T/F
True
Increasing complexity levels
Cellular
tissue
organ
organ system
Three common components of a feedback loop are
receptor
integrating (control) center
effector
If you are a biologist who studies groups of cells with a similar structure that work together to perform a particular function, your specialty would be
histology
example of body structure from simplest to most complex
protein mitochondrion adipocyte (fat cell) connective tissue stomach
An _______________ is composed of two or more tissues types, whereas ____________ are microscopic structures in a cell.
organ
organelles
negative feedback loops are
homeostatic
a structure that is composed of two or more tissues would be:
an organ
Blood glucose concentration rises after a meal and stimulates release of the hormone insulin. Insulin travels in the blood and stimulates body cells to uptake glucose from the bloodstream. This reduces blood glucose concentration. This is an example of
negative feedback
Homeostasis is the condition in which the body maintains:
a relatively stable internal environment, within limits
A(n) _____________ is a group of similar cells in a discrete region of an organ performing a specific function.
tissue
Now that you know some basic information about anatomical terminology and how terms are derived, which of the following terms do you think describes a cell found in the liver?
hepatocyte
A true statement about body cavities
The abdominal and pelvic cavities are not physically isolated from each other
_________________ are the simplest body’s structures considered alive.
cells
Negative feedback is a mechanism that _____________________.
restores homeostasis
Body system acts as a fast acting control system for the body?
nervous
Statement not true about organs
Organs can be studied for anatomical purposes, but not for physiological purposes.
the study of structure and function of cells is called
cytology
What would you find within the pericardial cavity
serous fluid
