The levels of __________ in your blood help your brain determine whether or not to stimulate eating behaviors

Puberty rituals _____________________________

a. developed to mark the departure from adolescence into emerging adulthood b. are only carried out for females and are most often related to menstruation c. are declining in many cultures as a consequence of globalization d. focus on a particular biological event across all cultures

Myasthenia gravis can be caused by which of the following?

a. Damage to dopamine-containing cells in the substantia nigra b. Loss of acetylcholine receptors on muscles c. Loss of cell bodies in the striatum d. Damage to the myelin sheath that covers axons in the spinal cord