When the nuclei of the sperm and egg fuse a(n) ________ is formed. fetus zygote

Question

When the nuclei of the sperm and egg fuse a(n) ________ is formed.

fetus               

zygote

corpus luteum            

embryo

Atherosclerosis is best defined as

a decrease in blood oxygen levels due to narrowing of the airways

extreme hypertension

hardining of the blood vessels due to the accumulation of fat deposits        

a type of arthritis that’s very difficult to treat

The ______ secretes releasing hormones that effect the functioning of the anterior pituitary.

posterior pituitary                  

hypothalamus

adrenal glands

thalamus         

midbrain

Which of the following is not true of the medulla?                       

It is involved in visual interpretation.            

It contains vital reflex centers.                       

It is where motor and sensory neurons decussate.                

It is located at the base of the brain stem.

Fast twitch fibers     

are light in color                     

are important for quick bursts of activity                  

have fewer blood vessels and mitochondria than slow twitch fibers            

all of the above

Which of the following statements about the resting membrane potential is true?      

the exterior of the cell has a net negative charge and the interior has a net positive charge

the exterior of the cell has a net negative charge and the interior is neutral

the exterior of the cell has a net positive charge and the interior has a net negative charge

the exterior of the cell has a net positive charge and the interior is neutral  

the exterior of the cell is neutral and the interior has a net negative charge

Which of the following is not a common cause of infertility?

blocked oviducts in females   

endometriosis in males           

abnormal morphology of sperm         

low sperm count in males

The “dub” of the “lub-dub” of a heart beat is heard as the ________ valve(s) are closing.

semilunar (SL)           

atrio-ventricular (AV)

precapillary                 

carotid

The adrenal cortex secretes

calcitonin                    

aldosterone                 

epinephrine                 

prolactin releasing hormone

A and C

Excessive secretion of growth hormone (GH) in adulthood can cause

acromegaly                 

gigantism                    

a goiter                       

pituitary dwarfism

Explanation / Answer

1)zygote

2) hardining of the blood vessels due to the accumulation of fat deposits

3)hypothalamus

5)all of the above

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