"Avascular but innervated" means that a tissue or structure lacks a direct blood supply (avascular), but it still has nerve supply (innervated). This usually indicates that the tissue relies on diffusion for its nutrient and oxygen supply, while still being able to communicate with the nervous system. Examples include the cornea of the eye and cartilage in joints.
whereas most tissue are vascular (contain blood vessels), epithelium is avascular, meaning it lacks blood vessels. epithelial cells receive their nutrients from capillaries in the underlying connective tissue. although blood vessels do not penetrate epithelial sheets, nerve endings do; that is, epithelium is innervated (supply organ with nerve).
Posterior Belly of Digastric Muscle (innervated by CN VII) Facial nerve Sternocleidomastoid (innervated by CN XI) Spinal accessory nerve Longissimus Capitis (innervated by dorsal rami of C3-C8 spinal nerves) Splenius Capitis (innervated by dorsal rami of middle cervical spinal nerves)
Yes, the limbs are innervated by both motor and sensory neurons.
The periumbilical area is primarily innervated by the T10 dermatome.
The visceral pleura is innervated by autonomic nerves that travel with the bronchial blood vessels. The parietal pleura is innervated by somatic nerves, specifically the intercostal nerves and the phrenic nerve.
In the medical and scientific fields, innervated means "to supply an organ with nerves." Other body parts besides organs can be innervated.
In the medical and scientific fields, innervated means "to supply an organ with nerves." Other body parts besides organs can be innervated.
GI tract is innervated locally by the enteric nervous system and activity of the Cajal pacemaker cells and by the autonomic nervous system (sympathetic / parasympathetic). It is not innervated by the somatic nervous system. I'm a neurobiologist/physiologist.
denticulate ligaments
Diaphragm
Epithelial tissue is composed of tightly packed cells that line organs and serve as barriers to protect against injury, infection, and absorption of nutrients. It is avascular, meaning it lacks blood vessels, and is classified based on its shape (squamous, cuboidal, columnar) and number of cell layers (simple, stratified). Epithelial tissue can also contain specialized structures like cilia or microvilli to assist in functions such as movement or absorption.