Show:
Homeostasis
Tissues
SA:V
Thermoregulation
Misc.
100
What is homeostasis

Optimal conditions maintained by organisms for survival

100

What are tissues?

groups of cells performing a similar function
100

To increase size, organisms must do what?

Increase the number of cells

100

Do ectotherms have a high or low metabolic rate?

Low because they generate very little heat. 

100

True or false: during the testing windows you are allowed to discuss test materials

false!!

200

What is physiology?

The study of homeostatic mechanisms
200

What are the 4 main types of tissues?

epithelial, muscle, connective, and nervous

200

True or false: Surface area and volume increase proportionately.

False, SA and Volume do NOT increase proportionally.

200

What are the 4 ways animals exchange heat with the environment?

conduction, evaporation, radiation, convection

200

What responds to change in the homeostatic pathway?

effector

300
What detects stimuli in the homeostatic pathway?

receptor

300

What is the role of muscle tissue?

Generate force

300

As an organism gets larger, what happens to its surface area relative to its volume?

It decreases

300

Q10 is a measure of what?

Temperature sensitivity

300

When is your first exam?

February 17th-20th

400
What are the 3 general physiological mechanisms?

negative feedback, positive feedback, and feedforward information (anticipatory)

400

Blood cells are an example of what type of tissue?

connective tissue

400

Is a high or low SA:V ratio better for heat dissipation?

high SA:V

** smaller animals have small volume, but a lot of surface area relative to this volume

400

Provide 3 examples of heterothermy.

shivering thermogenesis in pythons, torpor, and hibernation

400

Do hot fish have a concurrent or countercurrent heat exchange?

countercurrent

500

What is the difference between negative and positive feedback?

Negative feedback negates deviation from a set point, while positive feedback culminates in an event that resets the system.

500

What are the three shapes of epithelial cells?

stratified squamous, cuboidal, and columnar

500

Are animals in cold or hot climates more likely to have a high SA:V?

Hot climates

** the more surface area they have, the better they can dissipate heat

500

What is bergmann's rule?

animals tend to be larger in colder climates 

**smaller surface area = slower heat dissipation

500

Does metabolic rate increase or decrease as volume increases?

decreases

** larger animals would be in danger of overheating if they had a high metabolic rate