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Which nerve plexus is shown in this figure?
 
  A) lumbar plexus
  B) sacral plexus
  C) brachial plexus
  D) cervical plexus



(Question 2) What body system adjusts metabolic activity and energy use by the body?
 
  A) endocrine
  B) nervous
  C) digestion
  D) respiratory



(Question 3) Which organ system directs immediate responses to stimuli?
 
  A) endocrine
  B) nervous
  C) cardiovascular
  D) lymphatic



(Question 4) Both cats and humans have pairs of spinal nerves extending from the spinal cord. While cats have between 38 to 40 pairs, humans typically have ________ pairs.
 
  A) 6
  B) 12
  C) 24
  D) 31



(Question 5) Which two cavities are continuous with each other?
 
  A) pericardial and pleural
  B) thoracic and abdominopelvic
  C) the two pleural cavities
  D) cranial and spinal



(Question 6) What is the function of the serous fluid?
 
  A) increase friction
  B) reduce friction
  C) supplies nutrients to the organs
  D) absorb shock when the organs move



(Question 7) The serous membrane of the lungs is called the ________.
 
  A) pericardium
  B) pleura
  C) peritoneum
  D) periosteum



(Question 8) The layer of the serous membrane that is directly attached to the internal organ is the ________.
 
  A) peritoneum
  B) parietal layer
  C) pericardium
  D) visceral layer



(Question 9) The ventral body cavity is divided into two major cavities, the superior ________ cavity and the inferior ________ cavity.
 
  A) mediastinum; abdominal
  B) thoracic; abdominopelvic
  C) abdominal; pelvic
  D) thoracic; pericardial



(Question 10) A ________ section passes through the long axis of the body and divides the body into nearly equal halves.
 
  A) parasagittal
  B) midsagittal
  C) transverse
  D) oblique
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A year ago
1) C
Explanation:
A) The brachial plexus (shown) is a network formed by the intertwining of cervical nerves C6, C7, and C8 and thoracic nerve T1. This plexus innervates muscles and other structures of the shoulder, forelimb, and thoracic wall.
B) The sacral plexus is the neural network that supplies the muscles, and also the structures of the hip and hindlimb. The brachial plexus (shown) is a network formed by the intertwining of cervical nerves C6, C7, and C8 and thoracic nerve T1. This plexus innervates muscles and other structures of the shoulder, forelimb, and thoracic wall.
D) The brachial plexus (shown) is a network formed by the intertwining of cervical nerves C6, C7, and C8 and thoracic nerve T1. This plexus innervates muscles and other structures of the shoulder, forelimb, and thoracic wall.

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2) A
Explanation:
B) The nervous system coordinates or moderates activities of other organ systems.
C) The digestive system processes and digests food.
D) The respiratory system delivers air to the alveoli, provides oxygen to the bloodstream, and removes carbon dioxide from the bloodstream.

- - -

3) B
Explanation:
A) The endocrine system directs long-term changes in the activities of the other organ systems.
C) The cardiovascular system distributes blood cells, water and dissolved materials including nutrients, waste products, oxygen, and carbon dioxide.
D) The lymphatic system defends against infection and disease.

- - -

4) D
Explanation:
A) Humans have 31 pairs of spinal nerves; cats have 38 to 40 pairs, depending on whether some of the distal nerves have fused.
B) Humans have 31 pairs of spinal nerves; cats have 38 to 40 pairs, depending on whether some of the distal nerves have fused.
C) Humans have 31 pairs of spinal nerves; cats have 38 to 40 pairs, depending on whether some of the distal nerves have fused.

- - -

5) D
Explanation:
A) The pericardial and pleural cavities are three separate cavities.
B) The thoracic and abdominopelvic cavities are divided by the diaphragm.
C) The pleural cavities are two separate cavities.

Exercise 3: Organ Systems Overview

Exercise 3: Pre-Lab Questions

- - -

6) B
Explanation:
A) The fluid allows the layers of membrane to slide over each other with ease.
C) Blood is the provider of nutrients to the organs.
D) The function is to allow the two layers to smoothly slide over one another when the organs move.

- - -

7) B
Explanation:
A) The pericardium surrounds the heart.
C) The peritoneum surrounds the digestive organs.
D) The periosteum is the layer of connective tissue that surrounds bones.

- - -

8) D
Explanation:
A) The peritoneum is a serous membrane that is found in the abdominal cavity.
B) The parietal layer is the outermost layer of a serous membrane.
C) The pericardium is a serous membrane that surrounds the heart.

- - -

9) B
Explanation:
A) The mediastinum is part of the thoracic cavity, and the abdominal cavity is part of the abdominopelvic cavity.
C) The abdominal and pelvic cavities make up the abdominopelvic cavity.
D) The pericardial cavity is part of the thoracic cavity.

- - -

10) A
Explanation:
B) A midsagittal section would separate the body into equal halves.
C) A transverse section would separate the superior structures from the inferior structures.
D) An oblique section would separate the body at an angle.
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