The hypothalamus controls excretions from the pituitary gland. it causes the release of some hormones from the pituitary by
direct nervous control and others by secreting releasing and inhibiting factors that stimulate the pituitary to secrete hormones
which best describes the hypothalamus?
it is a connection point between the nervous and endocrine systems.
it is both an exocrine and endocrine gland.
it is referred to as the master gland."
it secretes its contents into ducts

parasites can detrimentally affect their host, but also must not allow their host to die before they can complete their life cycle. some parasites have complex life cycles with many different hosts, and have had to find ways of persisting in many different environments during the change from one host to another. ectoparasites live outside the body of the host, and can more easily  disperse, but are  more exposed to predators, parasites, parasitoids. endoparasites live inside the body of the host, and are therefore protected from the outside environment. but they can be  attacked by the host's immune system. they have therefore developed  mechanisms for dispersal such as  complex life cycles.

there’s no image attached but i can if you want: )