SCI 335 Week 10 Quiz 1

SCI 335 Week 10 Quiz 1 |  Wilmington University

Question 1

Releasing hormones are substances whose target cells are in the anterior pituitary gland.  

·         True  

·         False

 

Question 2

A hormone is defined as a ______ and the target cell is defined as _______.  

·         None of these is correct.  

·         substance that has a metabolic effect on another cell; a cell that possesses specific receptors for hormone molecules  

·         protein substance that stimulates other cells; the source of hormone secretions  

·         regulatory substance that controls secretions of other cells; a cell that synthesizes hormones

 

Question 3

The definition of endocrine is also the unique identifier for the system. It means  

·         hormone synthesis.  

·         acting upon target cells.  

·         internal secretion.  

·         fast-acting compound.

 

Question 4

As a rule, hormone concentrations are controlled by  

·         positive feedback mechanisms.  

·         thermostats.   

·         negative feedback mechanisms. 

·         cellular demands.

 

Question 5

Control of hormone secretion is essential to maintain  

·         neural control.

·         hypothalamic regulation.  

·         positive feedback loops.  

·         homeostasis.

 

Question 6

The central portion of the adrenal gland is the adrenal ______.

·         medulla

·         medulla

 

Question 7

The extrafollicular cells of the thyroid gland secrete calcitonin.  

·         True  

·         False

 

 Question 8

The condition called diabetes insipidus is caused by  

·         a lack of ADH.  

·         a lack of insulin.  

·         an excess of insulin.  

·         an excess of ADH

 

Question 9

As a result of the general response to stress, the blood concentrations of epinephrine  

·         rise and cortisol fall.    

·         and cortisol rise.  

·         and cortisol fall.  

·         fall and cortisol rise.

 

Question 10

Addison's disease 

·         All of these are correct. 

·         is characterized by decreased blood sodium and increased blood potassium levels.

 

·         results in low blood pressure. 

·         is caused by hyposecretion of cortical hormones.

 

Question 11

The pancreas functions as part of the endocrine system and as a part of the ______ system.

·         exocrine

·         digestive

 

Question 12

Where are the hormones secreted by the posterior pituitary made?  

·         in the thalamus  

·         in the posterior pituitary    

·         in the hypothalamus  

·         in the anterior pituitary

 

 Question 13

ADH and oxcytocin are secreted by  

·         neuromuscular cells.  

·         neuroendocrine cells.    

·         neurosecretory cells.  

·         neurons.

 

Question 14

Oxytocin acts primarily on the kidneys and causes them to conserve water.  

·         True  

·         False

 

Question 15

The secretion of pituitary hormones is largely controlled by the thalamus.  

·         True 

·         False

 

Question 16

Cushing's syndrome is  

·         caused by hypersecretion of cortical hormones.  

·         a cause of high blood glucose and sodium concentrations.  

·         a cause of a great decrease in tissue protein.  

·         All of these are correct.

 

Question 17

Releasing hormones are transmitted from the hypothalamus to the anterior pituitary gland by vessels called ______ ______ ______.

·         hypophyseal portal vein

·         hypophyseal portal veins

 

 

Question 18

Triiodothyronine is a hormone secreted by the  

·         pancreas.    

·         thyroid gland.  

·         parathyroid gland.  

·         adrenal gland.

 

Question 19

The ______ gland is located deep between the cerebral hemispheres attached to the roof of the third ventricle.

 

Question 20

A person under stress may have a lowered resistance to infection.  

·         True 

·         False