Accession Number:

AD0623349

Title:

UTERINE MOTILITY OF THE ESTROGENIZED RABBIT. IV. REFLEX EXCITATION AND INHIBITION,

Descriptive Note:

Corporate Author:

OSLO UNIV (NORWAY) NEUROPHYSIOLOGICAL LAB

Personal Author(s):

• Setekleiv,Hohannes

Report Date:

1964-03-16

Pagination or Media Count:

9.0

Abstract:

The uterus can be reflexly activated by stimulation of the rectum, various somatic nerves, and the central and peripheral ends of the cut vagus nerve. The initial uterine contraction is followed by a period of reduced rhythmic activity. Similar responses can be elicited by asphyxia and by clamping of the common carotid arteries. All these responses are due to activation of the sympathico-adrenal system. A transient inhibition of the spontaneous rhythmic activity is obtained by electrical stimulation of the depressor nerve. Since it is abolished by sympathetic blocking agents, it is most likely due to a reduction of a sympathetic tonic influence. The results indicate that although the autonomy of the myogenic rhythmic uterine activity is strong in the estrogenized rabbit, it can be influenced by various reflexes. It is suggested that the sympathetic nervous system exerts a tonic influence on the uterus in vivo. Author

Descriptors:

• *AUTONOMIC NERVOUS SYSTEM
• PHYSIOLOGY
• REPRODUCTIVE SYSTEM
• REFLEXES
• STIMULATION(PHYSIOLOGY)
• NERVES
• CONTRACTION
• BIOLOGICAL RHYTHMS
• CRANIAL NERVES
• SYMPATHOLYTIC AGENTS
• ESTROGENS
• RABBITS
• NORWAY

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE