Zoology

Veins of the Neck Zoology

Veins of the Neck

Veins of the Neck The veins of the neck include the external jugular, internal jugular, vertebral, and subclavian veins External Jugular Vein The exte…
Nose (Nasal Cavity) Zoology

Nose (Nasal Cavity)

Nose (Nasal Cavity) The median nasal septum, consisting of bony and cartilaginous components, subdivides the nasal cavity into a right and a left nasa…
Anatomy of Tongue Zoology

Anatomy of Tongue

Anatomy of Tongue The tongue, a muscular organ, is divided for descriptive purposes into the body, which lies relatively free in the oral cavity, and …
Muscles Zoology

Muscles

Muscle cells Muscle cells are specialized for contraction: every muscular function, from running and jumping, to ventilating the gills or lungs, prope…
Hormones Zoology

Hormones

Hormones and Nerves Increasing size and complexity in multicellular animals necessitates communication systems for integration and control. Two princi…