摘要:

The adrenal gland of the albino rat and the Egyptian desert rodents Gerbillus pyramidum and Gerbillus gerbillus was subject to histological and histochemical studies. Compared to the albino rat, the adrenal gland of the Egyptian desert rat had a thicker capsule, its zona glomerulosa was thinner and more vacuolated, its cortex was sharply demarcated from the medulla which appeared in the form of packets of cells. Lipid droplets were larger and more numerous in the zona glomerulosa and no subglomerular zone was detected. Cholesterol and its esters were less marked in the outer cortex. Succinic dehydrogenase activity was more marked in the zona reticularis. The cholinesterase-reactive nervous network in the medulla was more complex and dense and the nerve cells were fewer. The significance of these differences is discused.

ISSN:1422-6405    

DOI:10.1159/000144798

出版商:S. Karger AG    

年代:1977

数据来源: Karger

摘要:

The nerve endings in the carotid body of normal cats are investigated by means of serial sections. Two types of endings not described previously are especially studied: the non-synaptic bouton and the meniscus with prolongations. The first is a small nerve ending with abundant mitochondria and glycogen which is devoid of synaptic vesicles. The second is a normal meniscus which presents prolongations containing the same cytological elements of the nonsynaptic boutons. It is proposed that some menisci are lateral endings of an afferent fiber. Relating these results with well-known functional characteristics of the carotid body, the existence of axonal reflexes is suggested. These views can explain apparently contradictory facts.

ISSN:1422-6405    

DOI:10.1159/000144799

出版商:S. Karger AG    

年代:1977

数据来源: Karger

ISSN:1422-6405    

DOI:10.1159/000144800

出版商:S. Karger AG    

年代:1977

数据来源: Karger