The Arrow Is Pointing to Which Structure

question 24

Multiple Choice

The arrow is pointing to which structure?

• A) paraventricular nucleus
• B) supraoptic nucleus
• C) infundibular venous plexus
• D) axons of neurosecretory cells

---

Definitions:

Storage Granules

Organelles within cells that store and secrete various substances like hormones, neurotransmitters, or enzymes until they are needed.

Neurotransmitter

Chemical substances released from neuron endings to transmit signals across synapses to other neurons, muscles, or glands.

Peptide Transmitters

Short chains of amino acids that act as neurotransmitters in the brain.

Amino Acid Transmitters

Chemical substances in the brain that act as neurotransmitters, including glutamate and GABA, playing key roles in transmitting signals across the synaptic gap between neurons.