Samenvatting Reproduction (E+R) LDM221VE/HDM21

What is a Hormone?

Réponse: A molecule that is secreted into the extracellular fluid, it circulates in the blood or hemolymph, and it communicates regulatory messages throughout the body. The circulatory system allows a hormone to reach call cells of the body, but only its target cells have the receptors that enable a response.

Hemolymph

Réponse: A fluid, analogous to the blood in vertebrates.

What is the function of the endocrine system?

Réponse: The function is chemical signaling by hormones. Hormones secreted by endocrine cells regulate reproduction, development, energy metabolism, growth and behavior.

What is the nervous system?

Réponse: A network of specialized cells (neurons) that transmit signals along dedicated pathways. These signals in turn regulate other cells, including neurons, muscle cells and endocrine cells.

What is a neuron?

Réponse: (nerve cell) An electrically excitable cell that processes and transmits information through electrical and chemical signals.

What is a synapse?

Réponse: In the nervous system, a synapse is a structure that permits a neuron (nerve cell) to pass an electrical or chemical signal to another neuron. (Pathway)

Do the endocrine and nervous system overlap? Explain

Réponse: Yes. Because signaling by neurons can regulate the release of hormones, the nervous and the endocrine system often overlap in function.

How do hormones and other signaling molecules work?

Réponse: Bind to target receptors, triggering specific response pathways

Name 5 types of signaling.

Réponse: 1 Endocrine signaling 2 Paracrine signaling 3 Autocrine signaling 4 Synaptic signaling 5 Neuroendocrine signaling

How does endocrine signaling works?

Réponse: hormones secreted into extracellular fluids by endocrine cells reach target cells via the bloodstream. (Any where in the body)