Sensory Receptors | Nociceptors | Anatomy and Physiology of CNS and PNS

A physiology video packed with in-depth knowledge is here once more. The subject at hand is sensory receptors. In this video, we'll talk about the physiology of the senses, various skin receptor types, sensory receptors in the ear, and human sensory receptors. ▬ 📌 Sensory Receptors ▬▬▬▬▬▬▬▬▬▬ The sensory receptors of the peripheral nervous system are specialized to respond to stimuli. The sensory system consists of the following types of receptors: 🔹Mechanoreceptors 🔹Thermoreceptors 🔹Pain receptors 🔹Chemoreceptors 🔹Photoreceptors You will easily memorize them using a mnemonic. For this, you have to watch our physiology video. ▬ 📌 Cutaneous Receptors ▬▬▬▬▬▬▬▬▬▬ The skin is composed of two layers: 🔸Epidermis 🔸Dermis 👉Types of Cutaneous Receptors There are the following types of cutaneous receptors. ✫ Meissner corpuscles ✫ Merkel disks ✫ Root hair plexus ✫ Pacinian corpuscles ✫ Ruffini endings ✫ Krause end bulbs ▬ 📌 Proprioceptors ▬▬▬▬▬▬▬▬▬▬ The Proprioceptor system is involved in reflex actions that maintain muscle tone and thereby the body’s equilibrium and posture. The two forms of proprioceptors are called: 🔹Muscle spindles 🔹Golgi tendon organs ▬ 📌 Nociceptors ▬▬▬▬▬▬▬▬▬▬ Fibers of Nociceptors are of the following types: 🔸Fast Pain Fiber 🔸Slow Pain Fiber ▬ 📌 Sense of Taste ▬▬▬▬▬▬▬▬▬▬ When you taste food, it activates chemoreceptors called taste buds. We have at least five primary types of taste sensations: 🔹Sweet 🔹Sour 🔹Salty 🔹Bitter 🔹Umami 👉Types of Papillae There are the Following types of Papillae ✧ Vallate papillae ✧ Foliate papillae ✧ Filiform papillae ✧ Fungiform papillae ▬ 📌 Sense of Smell ▬▬▬▬▬▬▬▬▬▬ Our sense of smell is dependent on: 🔹Olfactory epithelium 🔹Olfactory cells 🔹Neurons 🔹Olfactory cilia 🔹Temporal lobe ▬ 📌 Sense of Vision ▬▬▬▬▬▬▬▬▬▬ The photoreceptors for sight are in the eyes. The eyes are located in spherical chambers called orbits. Orbits are formed by the skull’s bones called: ✦ Frontal ✦ Lacrimal Bone ✦ Ethmoid Bone ✦ Zygomatic Bone ✦ Maxilla ✦ Sphenoid Bone ▬ 📌 Extrinsic Muscles ▬▬▬▬▬▬▬▬▬▬ Within an orbit, the eye is anchored in place by the extrinsic muscles whose contractions move the eyes. Each of these muscles originates from the bony orbit and is inserted by tendons to the outer layer of the eyeball. There are three pairs of antagonistic extrinsic muscles: The first pair consists of: 📍Superior rectus 📍Inferior rectus The second pair consists of: 📍Lateral rectus 📍Medial rectus The third pair consists of: 📍Superior oblique 📍Inferior oblique ▬ 📌 Sense of Vision ▬▬▬▬▬▬▬▬▬▬ The eye consists of: ✨Sclera ✨Choroid ✨Retina ✨Cornea ✨Iris ✨Pupil ✨Ciliary Body ✨Ciliary Muscle ✨Lens ✨Suspensory Ligaments ✨Aqueous Humor ✨Suspensory Ligaments ✨Vitreous Humor ✨Cone ✨Rods ✨Macula Lutea ✨Optic Disk ✨Optic Nerve ✨Retinal Blood Vessels ▬ 📌 Sense of Hearing ▬▬▬▬▬▬▬▬▬▬ The ear has two sensory functions: ✧ Hearing ✧ Equilibrium or balance ▬ 🎬 5500+ sqadia.com Medical Videos ▬▬▬▬▬▬▬▬▬▬ 👩🏻‍⚕️ Accessible Medical Student Education 24/7/365 💡 Simplifying Medical Learning 💪 Study Hard, Dream Big, Achieve More #physiology #physiologylectures #medicalphysiology #physiologyvideos #medicalstudent #medicaleducation #medicallectures #medicalstudy #medicalstudents #medicalanimation