1. What do bone marrow (the soft connective tissue that fills the internal spaces in bone) and the dermis (layer of the skin under the epidermis and over the hypodermis) have in common? (1 point)
• They are both sites of new cell formation.
• They both contain or are associated with sensory neurons.
• They are both involved in waste disposal functions.
2. Why are capillaries and not arteries or veins found in alveoli, nephrons, and villi? (1 point)
Definitions:
Capillaries: tiny blood vessels where substances are exchanged between the blood and body cells
Arteries: blood vessels that carry blood away from the heart
Veins: blood vessels that carry blood from the body back to the heart
Alveoli: tiny sacs of lung tissue specialized for the movement of gases between air and blood
Nephron: a small filtering structure found in the kidneys that removes wastes from blood and produces urine
Villi: tiny, finger-shaped structures that cover the inner surface of the small intestine and provide a large surface area through which digested food is absorbed
• Vessels must be small so that very little blood enters these tissues.
• Vessels must be narrow so that only very small molecules can reach these tissues.
• Vessel walls must be thin to allow ease of transfer of molecules to these tissues.
3. Which of these structures relies on the circulatory system to transport the chemical compounds that it makes to other body structures? (1 point)
• neuron
• salivary gland
• pituitary gland (an endocrine gland that regulates many body activities and controls the actions of several other endocrine glands)
4. Which of the following must be true of the structures of axons (part of a neuron that conducts an electrical impulse away from the cell body) and muscle cells in order for nerve impulses to stimulate muscle contraction? (1 point)
• Axons and muscle cells must both have receptors that recognize the same small molecules.
• Axons must have structures that make and secrete molecules, and muscle cells must have receptors that recognize these molecules.
• Muscle cells must have structures that make and secrete molecules, and axons must have receptors that recognize these molecules.
5. Which of the following body systems does not rely on the autonomic nervous system to stimulate involuntary (unintentional) events? (1 point)
• skeletal system
• digestive system
• circulatory system
6. Which of the following body systems has a component that stops functioning and leads to diabetes? (1 point)
• endocrine system
• digestive system
• circulatory system
7. Which of the following pairs of structures share the function of reabsorbing water into the body? (1 point)
• lungs, stomach
• hypothalamus, pancreas
• large intestine, kidney
8. Which of the following body systems does the immune system rely on to provide the first line of defense against pathogens (organisms that causes disease)? (1 point)
• integumentary system
• nervous system
• endocrine system
9. Which of the following diseases is not explained by germ theory? (1 point)
• malaria
• HIV
• cancer
10. Which of the following can a hospital do to help reduce the spread of infectious diseases (diseases caused by the presence of a pathogen in the body that can pass from one organism to another)? (1 point)
• Have patients wash often using antibacterial soap.
• Keep infected patients confined, and limit visitors.
• Do not allow cleaning personnel into rooms occupied by infected patients.
11. Which of the following statements is true about fungi? (1 point)
• All fungi are pathogens.
• All fungi are microscopic.
• All fungi are living organisms.
12. Which of the following types of pathogens can only reproduce itself if it takes over host (an organism that a parasite lives with, in, or on, and provides a source of energy and/or a suitable environment for the parasite) cells? (1 point)
• bacteria
• virus
• protozoa
13. Bacteria are invisible to humans except under a microscope. Which evidence did Pasteur use to show that bacteria were the cause of soured wine? (1 point)
• Heated wine did not sour.
• Capped wine did not sour.
• Chilled wine did not sour.
Fill in the Blank: Word Bank:
Synapses Lungs
Dermis Ligaments
Gas Antibodies
Viruses Chemical
Urine Gliding
14. The layer of skin that contains nerves and blood vessels is the _________ (1 point)
15. ________ digestion occurs in the small intestine through the action of enzymes (a protein that aids in chemical digestion). (1 point)
16. Urea (a waste product of cells), excess water, and other waste materials are eliminated in a water fluid called ______________. (1 point)
17. ______________ can cause infections by injecting their DNA or RNA into hosts. (1 point)
18. The human immune system produces ______________ in response to a vaccine (a substance injected into the blood that contains weakened or killed pathogens and that can trigger an immune response), which later can bind to (stick or adhere to) and destroy a pathogen if it invades. (1 point)
19. The function of the magnified structure shown in the image below is ______________ exchange.
(1 point)
20. ______________ are structures that link bone to bone at a joint. (1 point)
21. In the heart, blood flows from the right atrium to the right ventricle, where it is pumped to the ______________. (1 point)
22. The joints highlighted in the image below are ______________ joints.
(1 point)
23. Neurotransmitters carry nerve impulses (a signal transmitted by neurons) across ______________. (1 point)
Note: Your teacher will grade your responses to questions 24 and 25 to ensure you receive proper credit for your answers.
24. Explain how the muscular and skeletal systems work together. (6 points)
25. Describe the flow of blood in the human body, including through each of the four chambers of the heart. Explain how the blood changes as it moves through various locations in the body. (6 points)
answers 1 through 13
1. A
2. C
3. D
4. C
5. A
6. A
7. D
8. A
9. C
10. B
11. C
12. C
13. A
I will give the fill in the blank answers once they have been graded
good job students I a proud of you for working together
What are the answers?
what are the answers!!!!!!!!!!!!!!?!?!?!
13 answers is right all of the answers are correct
hank you
Post them Individually
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