Consider the following three consonant sounds in intervocalic positions: a dental click, an (aspirated) voiceless alveolar stop, and a palatal nasal. I'm trying to understand what happens with (1) glottis (how the openness of the glottis changes), (2) larynx (how the degree of raising of the larynx changes), (3) pressure in vocal tract relative to outside (how the pressure changes) as one pronounces [aǀa], [atʰa], [aɲa].
Here are some of my hypotheses:
(1) In all three cases, when the consonant is produced, the glottis closes, and when the vowels surrounding the consonants are produced, the glottis is open. Is this right?
(2) I don't have any intuition on what happens with the larynx in these cases. I know that for ejectives, the larynx is raised, and for implosives, the larynx is lowered. But what happens for clicks, oral stops, and nasals?
(3) I suppose, in the case of [aǀa] and [atʰa], the air pressure becomes higher when we pronounce [|] and [tʰ] (compared to the pressure when [a]s are pronounced). In the case of [aɲa], I suppose the pressure is uniform across the three segments. Is that right?