Author Question: The esophagus has several variations from the standard plan of the GI tract. These include A) ... (Read 91 times)

NClaborn

  • Hero Member
  • *****
  • Posts: 560
The esophagus has several variations from the standard plan of the GI tract. These include
 A) epithelium of mucosa is stratified squamous.
  B) epithelium of mucosa is simple columnar.
  C) muscularis externa has some skeletal muscle.
  D) epithelium of mucosa is stratified squamous and simple columnar.
  E) epithelium of mucosa is simple columnar and muscularis externa may be striated muscle.

Question 2

Steroid hormones
 A) are proteins.
  B) cannot diffuse through cell membranes.
  C) bind to receptors in the nucleus of their target cells.
  D) act on target cells by activating second messenger cascades.
  E) are transported in the blood dissolved in the plasma.



CharlieArnold

  • Sr. Member
  • ****
  • Posts: 319
Answer to Question 1

C

Answer to Question 2

C



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

Did you know?

Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

Did you know?

Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

Did you know?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

Did you know?

Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.

For a complete list of videos, visit our video library