Latrotoxin produced by widow spiders causes several effects, one if which is to increase the release of ach at the synaptic cleft. what effect do you think this action would hae on muscel fibers

Acetylcholine is a neurotransmitter, that is, this substance transmits information from one neuron to another. It is stored in vesicles in the presynaptic neuron, and is secreted during an electrical impulse in the synapse (space between two neurons). Then, it will bind to the receptors of the end of the second neuron to propagate this influx before being recaptured by its original end.

The effects are:

Flaccid paralysis,

Respiratory failure,

Activation of the parasympathetic nervous system with: salivation, bronchorrhea, miosis, sweat,

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.

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