Which layer of the large intestine consists of longitudinal and circular muscles?
a. Serosa layer c. Submucosa layer
b. Muscularis layer d. Mucosa layer
B
The outermost layer, the serous layer (serosa), is formed from the visceral peritoneum and covers most of the large intestine, with the exclusion of the sigmoid colon. The second layer, the muscular layer (muscularis), consists of two smooth muscle layers: the longitudinal and the circular muscles. The third layer, the submucous layer (submucosa), consists of connective tissue that contains blood vessels, lymphatics, glands, and nerve plexuses. The innermost layer, the mucous layer (mucosa), is lined with simple columnar epithelial cells and contains deep crypts of Lieberkühn that are lined with mucus-producing goblet cells. The mucus eases the passage of the fecal material and protects the mucosal surface from trauma.
You might also like to view...
Which health belief system includes a belief of a supernatural force exerting influence to cause heath or illness?
a. Folk b. Holistic c. Biomedical d. Alternative/complementary
A patient who has been awaiting the results of a bone marrow biopsy for several days is experiencing stress as a result of uncertainty and the possibility that abnormal cell growth may be detected
A physical examination and blood work would most likely yield which of the following results? A) Increased respiratory rate; increased levels of testosterone B) Increased blood pressure and heart rate; increased antidiuretic hormone (ADH) C) Pupil dilation; increased somatomedin C D) Increased gastrointestinal motility; decreased thyroid-stimulating hormone
To move a client from a supine to a side-lying position, which of these actions should the nurse take first?
a. Lift the client's body. b. Place the client's inside arm next to the body with the palm of the hand against the hip. c. Slide hands under the client's body in a secure manner. d. Place pillows at the client's back to stabilize the new position.
A trauma patient is being assessed with the Champion Revised Scoring System. What assessment data should the nurse use with this scoring system?
Select all that apply. 1. diastolic blood pressure 2. heart rate 3. Glasgow coma scale 4. systolic blood pressure 5. respiratory rate