What structure is pulled upward during swallowing to close the opening between the nasal cavity and pharynx?

The nervous system interacts with the endocrine system by a. using hormones as connections b. sending nerve impulses directly to glands c. using neuroendocrine cells as connections d. sending neurotransmitters directly to neurons

Which type of stimulus do mechanoreceptors detect? sound pain heat light

Which description shows competition in an environment? an organism that feeds on some food an organism that finds a place to sleep three organisms of the same species living in an area three organisms battling over limited resources