Nervous System Basics
These are the gaps between Schwann cells and their myelin sheaths.
Nodes of Ranvier
These grooves are found on the surface of the brain.
Sulci
These ductless glands secrete hormones directly into the bloodstream.
Endocrine glands
There are this many pairs of spinal nerves in the human body.
31
This hormone stimulates uterine contractions during childbirth.
Oxytocin
This is the term for bundles of nerve fibers found specifically within the central nervous system.
Tracts
This brain wave state is associated with alertness and mental activity.
Beta
This hormone, secreted by the pancreas, decreases blood glucose levels.
This is the place where signals are transmitted between two neurons or a neuron and a muscle.
Synapse
This condition is characterized by damaged pancreatic beta-cells, leading to a total lack of insulin.
Diabetes mellitus type 1
These are the impulse-conducting cells of the nervous system.
Neurons
This cerebral lobe houses auditory and olfactory areas, as well as the Wernicke area.
Temporal lobe
Also known as local hormones, these substances act near their site of release.
Prostaglandins
This cranial nerve is responsible for regulating heart rate and digestion.
Vagus nerve
This hormone increases blood calcium levels by stimulating osteoclastic activity.
Parathyroid hormone
This mechanism produces and maintains the state of polarization within a neuron.
Sodium-potassium pump
This brain wave state is related to calmness and relaxation.
Alpha
These two hormones are collectively known as gonadotropins.
Luteinizing hormone (LH) and follicle-stimulating hormone (FSH)
This term refers to a network of intersecting spinal nerves.
Plexus
This structure secretes hormones that either stimulate or inhibit the release of hormones from the anterior pituitary.
Hypothalamus
This term refers to the period during which a neuron is unable to conduct another impulse until it repolarizes.
Refractory period
From deep to superficial, this is the correct order of the meninges.
Pia mater, Arachnoid, Dura mater (PAD)
These two specific hormones require iodine in order to be produced.
Tri-iodothyronine and thyroxine
This division of the autonomic nervous system is famously known as the "fight or flight" system.
Sympathetic nervous system
This hormone, secreted by adipocytes, is involved in appetite regulation.
Leptin