Question

determine if the following statements are true or false. if false rewrite the statement to make it true.

1. homeostasis refers to maintain the constancy of the external -

match each organ listen on the left with the cavity in which it is located. the cavities can be used more than once. place the correct letters in the blanks in the left.
____ 1. brain
a. abdominal cavity
____ 2. esophagus
b. dorsal cavity
____ 3. gallbladder
c. pelvic cavity
____ 4. heart
d. thoracic cavity
____ 5. liver
____ 6. rectum
match each organ system listed on the left with its general function on the right. place the correct letters in the blanks on the left.
____ 1. circulatory
a. includes the skin for protection
____ 2. digestive
b. integration and coordination
____ 3. urinary
c. breaks down nutrient molecules
____ 4. integumentary
d. produces sex cells
____ 5. nervous
e. place of attachment for the muscles
____ 6. reproductive
f. transport of blood throughout the body
____ 7. respiratory
g. rids the body of nitrogenous wastes
____ 8. skeletal
h. takes air to and from the lungs
state the normal, optimal value in the internal environment of the human body for each of the following characteristics of the blood maintained by homeostasis.

1. temperature (degrees f) ____________
2. temperature (degrees c) ____________
3. ph ____________
4. blood pressure ____________
5. glucose concentration ____________

Explanation:

1. The statement about homeostasis is false. Homeostasis maintains the constancy of the internal environment, not the external.

• Brain is in the dorsal cavity.
• Esophagus is in the thoracic cavity.
• Gallbladder is in the abdominal cavity.
• Heart is in the thoracic cavity.
• Liver is in the abdominal cavity.
• Rectum is in the pelvic cavity.
• Circulatory system transports blood throughout the body.
• Digestive system breaks down nutrient molecules.
• Urinary system rids the body of nitrogenous wastes.
• Integumentary system includes the skin for protection.
• Nervous system is for integration and coordination.
• Reproductive system produces sex cells.
• Respiratory system takes air to and from the lungs.
• Skeletal system is the place of attachment for the muscles.
• Normal body temperature in Fahrenheit is about 98.6°F, in Celsius is about 37°C. Normal blood pH is around 7.35 - 7.45. Normal blood - pressure is around 120/80 mmHg. Normal glucose concentration in blood is about 70 - 110 mg/dL after fasting.

Answer:

1. False. Homeostasis refers to maintain the constancy of the internal - environment.

2.

• 1. b
• 2. d
• 3. a
• 4. d
• 5. a
• 6. c

3.

• 1. f
• 2. c
• 3. g
• 4. A
• 5. b
• 6. d
• 7. h
• 8. e

4.

• 1. 98.6°F
• 2. 37°C
• 3. 7.35 - 7.45
• 4. 120/80 mmHg
• 5. 70 - 110 mg/dL (fasting)