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Displaying 91-100 of 241 results.
Melatonin is a hormone made by the pineal gland, a small gland in the brain. Melatonin helps control your sleep and wake cycles. Use the Internet to research how the nervous and endocrine systems control the production and release of melatonin and how melatonin controls your sleep and wake cycles. Evaluate each statement below and select the statement that best describes the pathway.
Select one:
Light on the retina stimulates the hypothalamus to send a signal to the pineal gland to stop producing melatonin, signalling the body to wake up.
. Light on the retina stimulates the hypothalamus to send a signal to the pineal gland to increase the production of melatonin, signalling the body to wake up.
 Light on the retina stimulates the hypothalamus to send a signal to the pineal gland to stop producing melatonin, signalling the body to go to sleep.
 Light on the retina stimulates the hypothalamus to send a signal to the pineal gland to increase the production of melatonin, signalling the body to go to sleep.

Posted 5 years ago by miyaomar in Biology 30 | 0 answers
#sensory pathway #receptors #tactileacuity 

Nephrogenic diabetes insipidus is a condition where ADH is released by the posterior pituitary but the cells in the kidneys are unable to respond to ADH. This is in contrast to neurogenic diabetes insipidus where the body does not produce enough ADH. When the kidneys are unable to respond to ADH, the urine formation ______ and ADH secretion _______. Which of the following rows correctly completes the sentence above?
Select one:
Urine Formation ADH Secretion Increases Increases in response to decreased water retention
Urine Formation ADH Secretion Decreases Decreases in response to increased water retention
Urine Formation ADH Secretion Decreases Increases in response to increased blood pressure
Urine Formation ADH Secretion Increases Decreases in response to decreased blood pressure 

Posted 5 years ago by miyaomar in Biology 30 | 1 answers
#sensory pathway #receptors #tactileacuity 

An athlete is sweating profusely but does not rehydrate. The changing conditions are detected by osmoreceptors in the hypothalamus.Select the conditions associated with loss of water and the response it triggers.

Increased solute concentration Decreased solute concentration Increased blood volume Decreased blood volume Increased blood pressure Decreased blood pressure Increased release of ADH Decreased release of ADH

 

Posted 5 years ago by miyaomar in Biology 30 | 0 answers
#water #blood volume #dehydration #adh 

When the blood pressure drops, the body responds by
Select one:
decreasing ADH production to decrease vasoconstriction
 increasing ADH production to increase urine volume
 increasing ADH production to increase vasoconstriction
 decreasing ADH production to decrease urine volume

Posted 5 years ago by miyaomar in Biology 30 | 2 answers
#adh hormones #sensory pathway #receptors 

This gland is the link between the nervous and endocrine systems.
Select one:
. hypothalamus
 thalamus
pituitary
. thyroid

Posted 5 years ago by miyaomar in Biology 30 | 1 answers
#hormones #thyroid #pituitary 

Identify the sequence of structures through which sperm pass from the site of production to the vagina. Answer   Answer   Answer   Answer 

Posted 5 years ago by miyaomar in Biology 30 | 1 answers
#female reproduction #receptors #tactileacuity 

An individual was suffering from violent headaches and blurred vision for several years. A doctor determined that this individual had a tumour on the anterior pituitary. 

From what you know about this structure of the brain, can you explain why this person was experiencing blurred vision?

Posted 5 years ago by npaulovich in Biology 30 | 1 answers
#brain 

Which of the following statements does NOT correctly describe a difference between the male and female reproductive systems?
Select one:
The male reproductive system mass produces large quantities of gametes each day, whereas the female reproductive system produces an average of a single gamete each month.
The excretory and reproductive systems both use the urethra in males, whereas in females, there are separate tubes for the excretory and reproductive systems.
The structures that produce gametes are exterior to the body in the male reproductive system, whereas the gametes are produced inside the body for females.
Testosterone has a major role in the development of secondary sexual characteristics in male reproductive systems, whereas LH promotes the development of secondary sexual characteristics in females.

Posted 5 years ago by miyaomar in Biology 30 | 1 answers
#female reproduction #tactileacuity #visualfield 

 

Identify the sequence of structures through which sperm pass from the site of production to the vagina. 

Answer   Answer   Answer   Answer 

 

Which of the following STIs can easily be transmitted during sex even with the use of physical barriers such as condoms?
Select one:
. Chlamydia and gonorrhea
Chlamydia and HIV
Human papillomavirus and genital herpes
 Gonorrhea and HIV

Posted 5 years ago by miyaomar in Biology 30 | 2 answers
#reproductive #boys #sensory pathway 

Which of the following rows correctly matches the human reproductive structure with its function?
Select one:
a.  Male Reproductive System Female Reproductive System Structure  Function  Structure  Function    Vas deferens  Carries sperm from testes  Fallopian Tubes  Site of implantation 
b.  Male Reproductive System Female Reproductive System Structure  Function  Structure  Function  Epididymis  Site of sperm production  Ovaries  Site of fertilization 
c.  Male Reproductive System Female Reproductive System Structure  Function  Structure  Function  Testes  Site of testosterone production  Cervix  Opening to the site of implantation 
d.  Male Reproductive System Female Reproductive System Structure  Function  Structure  Function    Ureter  Carries urine and sperm  Urethra  Carries urine 

Posted 5 years ago by miyaomar in Biology 30 | 3 answers
#reproductive #sensory pathway #receptors 

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