1. Body Systems and Homeostasis
Name: _______________________
Date: ________________________
Pd. _______
Body Systems and Homeostasis
Unit Review
Define the following terms:
Cell membrane________________________________________________________________________
Vacuole:______________________________________________________________________________
Endoplasmic Reticulum:_________________________________________________________________
Ribosome:____________________________________________________________________________
Nucleus (of cell):_______________________________________________________________________
Golgi Apparatus:_______________________________________________________________________
Mitochondria:_________________________________________________________________________
Lysosome:____________________________________________________________________________
Positive feedback:______________________________________________________________________
Negative feedback:_____________________________________________________________________
Homeostasis:__________________________________________________________________________
Circulatory system:_____________________________________________________________________
Lymphatic system:______________________________________________________________________
Endocrine System:______________________________________________________________________
Digestive System:______________________________________________________________________
Respiratory System:____________________________________________________________________
Integumentary System (skin):____________________________________ ________________________
Nervous system:_______________________________________________________________________
Excretory system:______________________________________________________________________
Muscular system:______________________________________________________________________
Skeletal system:________________________________________________________________________
Identify the systems described below
________________22. The first defense against outside disease and aids in temperature moderation.
________________23. Most organs are controlled and monitored by the hypothalamus.
________________24. Provides the body’s main structure and support.
________________25. Carries waste away from cells after cellular respiration.
________________26. Filters and removes nitrogenous waste from the body.
________________27. Provides raw materials like proteins, lipids, carbohydrates, and water to the body.
________________28. The exchange point between the atmosphere and the body.
________________29. Contains cells capable of immediate, short-term responses.

2. Skeletal Muscle Sperm Red Blood Cell Neuron White Blood Cell
30. Directions: Label the organelles on the neuron pictured below.
A: _____________________________
B: _____________________________
C: _____________________________
D: (contains digestive enzymes)________________________
E: (contains food particles) __________________________
F: _____________________________
G: _____________________________
H: _____________________________
Skeletal Muscle
Sperm
Red Blood Cell
Neuron
White Blood Cell
Nucleus 7 1
Endoplasmic Reticula
Mitochondria
6,500
3,500
1,000
1,200
Golgi Body 15 45 20
Ribosomes
50 million
15 million
20 million
Lysosome 70
500
900
Specialized cells have different organelles that aid with its function. Use the table above to interpret how the organelles present in each different cell type aid in their function (numbers are very approximate, every cell is different!).
Skeletal muscle:
Sperm:
Red Blood Cell:
Neuron:
White Blood Cell:
Hierarchy
32. List each level of organization of living things from least complex to most complex:

3. Transport Systems
A human circulatory system is pictured to the right. The circled areas represent regions of the body where there are massive concentrations of blood vessels.
33. What are the differences between capillaries, veins, and arteries?
How does the circulatory system interact with the following systems:
Digestive:__________________________________________________________________________________________________________
Respiratory:________________________________________________________________________________________________________
Excretory:__________________________________________________________________________________________________________
Integumentary: (Skin)_______________________________________________________
Muscular:__________________________________________________________________________________________________________
Lymphatic__________________________________________________________________________________________________________
Endocrine__________________________________________________________________________________________________________
Communication Systems
Explain how responses from the nervous system differ from responses in the endocrine system.
What are the two major divisions within the nervous system? Describe each.
List at least THREE organs that are shared between the endocrine and another system. Describe how this organ fulfills its role in both systems. 1) 2) 1) 2) 3) 4)

4. Homeostasis
Different diseases will negatively impact your body’s systems. Those effects could be exaggerated through other body systems as well. In the questions below, a disease is described. Identify the immediately affected body system and identify specific impacts this disease could have on the body’s ability to maintain homeostasis.
38. Excess amounts of salts and crystals will form a solid stone-like plug in the nephron tubes What body system is immediately affected? _____________________________
What impact would this have on homeostasis?
39. Hypothyroidism is a condition where the thyroid is swollen and damaged. This will cause the thyroid to secrete less product than usual What body system is immediately affected? _________________________
Feedback Mechanisms
Pictured below are two feedback mechanisms. In space below, identify which reaction is a positive and which is a negative feedback mechanism.
Which is negative feedback? _______ Explain your choice.
41. Which is positive feedback? ________ Explain your choice. A) B)