gills
The gills of a crayfish are attached to the base of the legs, specifically the appendages of the abdomen. Each pair of walking legs has a branchial chamber where the gills are located.
A statocyst at the base of each antennule enables the crayfish to keep its balance.
The lymphatic structures located at the base of the tongue are called lingual tonsils. These tonsils are responsible for helping to trap and fight off bacteria and viruses that enter the body through the mouth.
The basal body is located at the base of a eukaryotic flagellum or cilium and anchors these structures to the cell membrane. It plays a role in organizing the microtubules that make up the flagellum or cilium, providing structural support.
The lungs.
Sepals
Four.
The structures that form a protective ring of lymphatic tissue surrounding the internal openings of the nose and mouth include the tonsils, specifically the palatine tonsils located at the back of the throat, and the lingual tonsils located at the base of the tongue. These structures help filter out and trap pathogens from entering the respiratory and digestive systems.
No, the optic chiasma is located inside the brain and cannot be seen with an ophthalmoscope. The ophthalmoscope is used to visualize structures at the back of the eye such as the retina, optic nerve, and blood vessels.
by not striking out and walking
The apex is located above the centre of the base.
Sound travels through a bird's body primarily through air-filled sacs and specialized structures such as the syrinx, a unique vocal organ located at the base of the trachea. These structures act as resonating chambers to produce and amplify sound.