spinnbarkeit The stringy, elastic character of cervical mucus during the ovulatory period; in contrast to other times in the menstrual cycle, cervical secretions at midcycle are clear, abundant, and of low viscosity. Origin: Ger. Spinnbarkeit, visxosity, ability to form a thread..
Neurons generate electric signals that they pass along to the other neurons or target tissues. In this tutorial, you wil..
Homeostasis is the relatively stable conditions of the internal environment that result from compensatory regulatory res..
The blood sugar level is regulated by two hormones. The mechanism behind this type of negative feedback control is descr..
Upon fertilization, a zygote forms and develops into an embryo. This tutorial elaborates on the growth and development f..
Autotrophs flourished, absorbing carbon and light. Soon after, primitive life forms that could assimilate oxygen thrived..
The nervous system is essentially a biological information highway. This tutorial gives an overview of the nervous syste..
