Download An Introduction to Biological Rhythms by John D. Palmer PDF

By John D. Palmer

Show description

Read or Download An Introduction to Biological Rhythms PDF

Best anatomy books

Color Atlas and Textbook of Human Anatomy. Nervous System and Sensory Organs

A well-balanced mix of a medical textual content, reference fabric and multicolor illustrations make this three-volume set eminently precious for college kids and practitioners alike. Skillful visible method of anatomy, that is a needs to in each physician's schooling, is fortunately wedded to a lucid textual content juxtaposed web page by means of web page with outstanding multicolor illustrations in this kind of demeanour that the concise description of the useful features of anatomy presents an invaluable consultant for the perceptive pupil.

Prime Mover: A Natural History of Muscle

No matter if we blink a watch, elevate a finger, throw a spear or a ball, stroll, run or simply breathe, we're utilizing muscle. even supposing muscle mass vary little in visual appeal and function around the animal nation, they accomplish initiatives as varied as making flies fly, rattlesnakes rattle and squid shoot their tenticles.

The Marmoset Brain in Stereotaxic Coordinates

Laboratory-bred universal marmosets (Callithrix jacchus) have a ordinary lifespan in captivity in far more than 12 years, whereas their greatest durability is greater than sixteen years. because of its small dimension, its rather effortless version to laboratory stipulations, and neuroanatomical similarities with human species, this animal is taken into account to symbolize a handy primate version for neurosciences and drug improvement.

Developmental Neuropathology

I used to be gratified through the main favorable reception and vast utilization acquired by means of the 1st version of this ebook. A decade looks a brief interval for a e-book on pathology, and but it witnessed many very important adjustments of thoughts, in addition to a powerful progress of information. the second one variation required huge reorganization.

Extra info for An Introduction to Biological Rhythms

Sample text

From E. Bünning, Ber. Dtsch. Bot. Ges. 5 3 , 5 9 4 - 6 2 3 (1935). 22 1. Introduction to Biological Rhythms, Their Properties, and Clock Control to m e a s u r e off p e r i o d s o f a b o u t 2 4 h o u r s is a n i n n a t e p r o p e r t y o f p r o toplasm. N o t o n l y is t h e c a p a c i t y to b e r h y t h m i c i n h e r i t e d , t h e p h a s e a n d p e r i o d l e n g t h h a v e a l s o b e e n s h o w n to b e u n d e r g e n e t i c c o n t r o l . F o r c l e a r - c u t e x a m p l e s , a d d i t i o n a l e x p e r i m e n t s w i t h t h e fruit-fly e c l o s i o n r h y t h m will b e described.

In t h e l a b o r a t o r y , at c e r t a i n i n t e n s i t i e s o f c o n s t a n t i l l u m i n a t i o n , a n e v e n t takes place w h i c h complicates, s o m e w h a t , the interpretation of the underlying clockworks. U n d e r these conditions the periods of the sleepm o v e m e n t r h y t h m s c o n t r o l l e d b y t h e p r i m a r y p u l v i n i ( i n t h e leaf axil) a n d t h e s e c o n d a r y p u l v i n i (at t h e j u n c t i o n o f t h e b l a d e a n d p e t i o l e ) differ, e .

E v e n m o r e s t r i k i n g , r h y t h m s w i l l p e r s i s t i n a s i n g l e cell from w h i c h the nucleus has b e e n r e m o v e d (Figure 2 - 5 ) . N o w , complicating matters even more, evidence is b e g i n n i n g to accumulate which suggests that m o r e than o n e clock m a y b e involved in the control of a single rhythmic process. I n c o n c l u s i o n , t h e r e i s still n o t e n o u g h e v i d e n c e a v a i l a b l e t o s e l e c t o n e clock t y p e o v e r t h e o t h e r , to i d e n t i f y t h e c o u p l i n g s y s t e m b e t w e e n clock a n d r h y t h m , o r to k n o w h o w m a n y c l o c k s a r e p r e s e n t i n a s i n g l e 28 1.

Download PDF sample

Rated 5.00 of 5 – based on 14 votes