Lecture 1: introduction to organ systems

Question 1

What is Anatomy?

Answer 1

Study of the structure of body parts and their relationships to
one another

Question 2

What is Physiology?

Answer 2

Study of the function of body parts and how they work together to carry out life-sustaining activities

Question 3

What is Homeostasis?

Answer 3

maintenance of relatively stable internal conditions despite
continuous changes in environment

Question 4

What is a variable?

Answer 4

Factors that can change

Question 5

which organ systems are responsible for regulating your blood pressure?

Answer 5

1- cardiovascular
2- excretory (kidneys)
3- nervous ( sends signals to regulate body)

Question 6

where can you find smooth muscle cell?

Answer 6

in hollow organs in your body

Question 7

what are some variables that are maintained by homeostasis?

Answer 7

1- Co2 levels in blood
2-internal/ body temperature
3- blood pressure
4-blood sugar level
5-hormones( ex: insulin, sex hormones, thyroid hormones)
6- water/ solute balance
7- iron levels
8- O2 levels
9-microbiome

Question 8

Which mechanism is most common in our bodies? Why?

Answer 8

Negative feedback to keep things in narrow range

Question 9

For blood sugar, pancreas acts as a ____ and ____

Answer 9

receptor and control center

Question 10

For high blood sugar, pancreas release what? and what happens after?

Answer 10

releases insulin, the cells take up glucose from the blood and glycogen is formed ( liver + muscle)

Question 11

For low blood sugar, pancreas release what? and what happens after?

Answer 11

releases glucagon, glucose is released into the blood and glycogen is broken down (liver)

Question 12

what is the receptor and control center that regulates body temperature?

Answer 12

hypothalamus