Outer sulcus cell features and distribution are hypothesized to differ throughout regions of the human cochlea and between diseased and normal specimens. Outer sulcus cells play a role in inner ear fluid homeostasis. However, their anatomy and ...

The auricle or auricula is the visible part of the ear that is outside the head. It is also called the pinna ( Latin for ' wing ' or ' fin ', pl. : pinnae ), a term that is used more in zoology . Structure

inner ear, part of the ear that contains organs of the senses of hearing and equilibrium. The bony labyrinth, a cavity in the temporal bone, is divided into three sections: the vestibule, the semicircular canals, and the cochlea.

The External Ear. The external ear comprises three main parts: (i) the auricle or pinna, (ii) the external acoustic canal, and (iii) the tympanic membrane. (i) Auricle or Pinna. The auricle, or pinna, plays a important role in focusing and localizing sound waves from the environment.

2023年8月8日 · Internal Ear: Ventral Saccular Component. The ventral saccular component of the otic vesicle forms a tubular cochlear duct, the primordial cochlea, within the mesenchyme by the sixth week. The cochlear duct grows and spirals two …

2023年7月27日 · The concha is the hollow region that lies adjacent to the external ear opening. Finally the auricular sulcus is the depression that lies posterior to the ear. The malleus, or hammer in Latin, develops from the first pharyngeal arch cartilage, like the mandible and maxilla jawbones.

2 天之前 · Sensory organs play a major role in how animals interact with the environment. de Haan et al. used in utero injection and lineage tracing to resolve cellular differentiation trajectories of the developing inner ear in mice.Lentiviral injection into the mouse amniotic cavity at embryonic day 7.5 allowed the authors to determine the various cell …

Outer sulcus cells play a role in inner ear fluid homeostasis. However, their anatomy and distribution in the human are not well described. Temporal bone specimens with normal hearing (n = 10), Menière's disease (n = 10), presbycusis with flat audiograms (n = 4), and presbycusis with sloping audiograms (n = 5) were examined by light microscopy.

Anomalies of the ear include quantitative traits and qualitative features of the entire ear, and of the individual components. Variation in size (macrotia; microtia; anotia). Variation in position (low-set ears; posterior angulation of the ear).

The tympanic part of the temporal bone is a curved plate of bone lying below the squamous part of the temporal bone, in front of the mastoid process, and surrounding the external part of the ear canal. It originates as a separate bone (tympanic bone), …