This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Evaluate the hypothesis that the suprachiasmatic nucleus (SCN) acts as the primary biological clock. ... (Read 20 times)

jayhills49

  • Hero Member
  • *****
  • Posts: 559
on: Jun 22, 2018
Evaluate the hypothesis that the suprachiasmatic nucleus (SCN) acts as the primary biological clock.
 
  What will be an ideal response?

Question 2

After his penis was destroyed at age 7 months in a botched circumcision procedure, Bruce (the subject of the chapter prologue)
 
  A) then became Brenda.
  B) retained his a male identity.
  C) received regular injections of testosterone from age 15 to 30 .
  D) was given a penile implant at age 5.
  E) received estrogen pills starting at age 5.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

patma1981

  • Sr. Member
  • ****
  • Posts: 292
Reply #1 on: Jun 22, 2018
Answer to Question 1

Answer: The SCN receives afferent signals from the retina (melanopsin in ganglion cells) that provide the capacity of light signals to reset the clock (zeitgeber function). Damage to the SCN impairs circadian rhythms. Cells within the SCN show reliable changes in neural activity across the day and the night. Transplanted SCN cells placed into the ventricles are sufficient to restore circadian rhythms in hamsters whose own SCN was ablated.

Answer to Question 2

Answer: A


jayhills49

  • Member
  • Posts: 559
Reply 2 on: Jun 22, 2018
Great answer, keep it coming :)

samiel-sayed

  • Member
  • Posts: 337
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

Did you know?

Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

Plastid composition of egg cells from green, white, and variegated four-o'clock plants. Plastid composition of egg cells from green, white, and variegated four-o'clock plants.
Select of Primary and Secondary Procedures Select of Primary and Secondary Procedures
The clock generator produces a series of pulses that are used by the microprocessor and other ... The clock generator produces a series of pulses that are used by the microprocessor and other ...
How to evaluate a function containing the constant k How to evaluate a function containing the constant k
How to evaluate the second order determinant How to evaluate the second order determinant
In 1974 a UC Berkeley group fired an oxygen nucleus at a californium target. Giv In 1974 a UC Berkeley group fired an oxygen nucleus at a californium target. Giv
Video: Amniocentesis and CVS Animation

For a complete list of videos, visit our video library