81 relations: Afferent nerve fiber, Ansa cervicalis, Atlas (anatomy), Autonomic nervous system, Axon, Brachial plexus, Buttocks, Cauda equina, Central nervous system, Cervical plexus, Cervical spinal nerve 1, Cervical spinal nerve 8, Cervical vertebrae, Coccygeal plexus, Coccyx, Dermatome (anatomy), Descending colon, Dorsal ramus of spinal nerve, Dorsal root of spinal nerve, Dura mater, Efferent nerve fiber, Epaxial and hypaxial muscles, Erector spinae muscles, Foot, Ganglion, Gray ramus communicans, Greater occipital nerve, Greater trochanter, Hip, Human body, Iliac crest, Intercostal nerves, Intercostobrachial nerve, Intervertebral foramen, Latissimus dorsi muscle, Leg, Longissimus, Lumbar arteries, Lumbar ganglia, Lumbar plexus, Lumbar vertebrae, Lumbosacral plexus, Lumbosacral trunk, Meningeal branches of spinal nerve, Multifidus muscle, Muscle fascicle, Muscle weakness, Myotome, Nerve, Nerve plexus, ..., Occipital bone, Omohyoid muscle, Paravertebral ganglia, Perception, Peripheral nervous system, Psoas major muscle, Quadratus lumborum muscle, Ramus communicans, Rectum, Rhomboid muscles, Sacral nerve stimulation, Sacral plexus, Sacrum, Sciatica, Semispinalis muscles, Sex organ, Spinal cord, Sternohyoid muscle, Sternothyroid muscle, Subcostal nerve, Suboccipital nerve, Sympathetic trunk, Thigh, Third occipital nerve, Thoracic vertebrae, Trapezius, Urinary bladder, Ventral ramus of spinal nerve, Ventral root of spinal nerve, Vertebral column, White ramus communicans. Expand index (31 more) » « Shrink index
Afferent nerve fibers refer to axonal projections that arrive at a particular region; as opposed to efferent projections that exit the region.
The ansa cervicalis (or ansa hypoglossi in older literature) is a loop of nerves that are part of the cervical plexus.
In anatomy, the atlas (C1) is the most superior (first) cervical vertebra of the spine.
The autonomic nervous system (ANS), formerly the vegetative nervous system, is a division of the peripheral nervous system that supplies smooth muscle and glands, and thus influences the function of internal organs.
An axon (from Greek ἄξων áxōn, axis) or nerve fiber, is a long, slender projection of a nerve cell, or neuron, that typically conducts electrical impulses known as action potentials, away from the nerve cell body.
The brachial plexus is a network of nerves formed by the anterior rami of the lower four cervical nerves and first thoracic nerve (C5, C6, C7, C8, and T1).
The buttocks (singular: buttock) are two rounded portions of the anatomy, located on the posterior of the pelvic region of primates (including humans), and many other bipeds or quadrupeds, and comprise a layer of fat superimposed on the gluteus maximus and gluteus medius muscles.
The cauda equina is a bundle of spinal nerves and spinal nerve rootlets, consisting of the second through fifth lumbar nerve pairs, the first through fifth sacral nerve pairs, and the coccygeal nerve, all of which arise from the lumbar enlargement and the conus medullaris of the spinal cord.
The central nervous system (CNS) is the part of the nervous system consisting of the brain and spinal cord.
The cervical plexus is a plexus of the anterior rami of the first four cervical spinal nerves which arise from C1 to C4 cervical segment in the neck.
The cervical spinal nerve 1 (C1) is a spinal nerve of the cervical segment.
The cervical spinal nerve 8 (C8) is a spinal nerve of the cervical segment.
In vertebrates, cervical vertebrae (singular: vertebra) are the vertebrae of the neck, immediately below the skull.
The coccygeal plexus is a plexus of nerves near the coccyx bone.
The coccyx, commonly referred to as the tailbone, is the final segment of the vertebral column in humans and apes, and certain other mammals such as horses.
A dermatome is an area of skin that is mainly supplied by a single spinal nerve.
The descending colon is the part of the large intestine from the splenic flexure to the beginning of the sigmoid colon.
The dorsal ramus of spinal nerve (or posterior ramus of spinal nerve, or posterior primary division) is the posterior division of a spinal nerve.
The dorsal root of spinal nerve (or posterior root of spinal nerve) is one of two "roots" which emerge from the spinal cord.
Dura mater, or dura, is a thick membrane made of dense irregular connective tissue that surrounds the brain and spinal cord.
In the peripheral nervous system, an efferent nerve fiber is the axon of a motor neuron.
Trunk muscles can be broadly divided into hypaxial muscles, which lie ventral to the horizontal septum of the vertebrae and epaxial muscles, which lie dorsal to the septum.
The erector spinae or spinal erectors is a set of muscles that straighten and rotate the back.
The foot (plural feet) is an anatomical structure found in many vertebrates.
A ganglion is a nerve cell cluster or a group of nerve cell bodies located in the autonomic nervous system and sensory system.
Each spinal nerve receives a branch called a gray ramus communicans (plural rami communicantes) from the adjacent paravertebral ganglion of the sympathetic trunk.
The greater occipital nerve is a spinal nerve, specifically the medial branch of the dorsal primary ramus of cervical spinal nerve 2.
The greater trochanter (great trochanter) of the femur is a large, irregular, quadrilateral eminence and a part of the skeletal system.
In vertebrate anatomy, hip (or "coxa"Latin coxa was used by Celsus in the sense "hip", but by Pliny the Elder in the sense "hip bone" (Diab, p 77) in medical terminology) refers to either an anatomical region or a joint.
The human body is the entire structure of a human being.
The crest of the ilium (or iliac crest) is the superior border of the wing of ilium and the superolateral margin of the greater pelvis.
The intercostal nerves are part of the somatic nervous system, and arise from the anterior rami of the thoracic spinal nerves from T1 to T11.
The intercostobrachial nerves are cutaneous branches of the intercostal nerves.
The intervertebral foramen (also called neural foramen, and often abbreviated as IV foramen or IVF), is a foramen between two spinal vertebrae.
The latissimus dorsi is a large, flat muscle on the back that stretches to the sides, behind the arm, and is partly covered by the trapezius on the back near the midline.
A leg is a weight bearing and locomotive anatomical structure, usually having a columnar shape.
The longissimus (Latin for 'the longest one') is the muscle lateral to the semispinalis.
The lumbar arteries are arteries located in the lower back or lumbar region.
The lumbar ganglia are paravertebral ganglia.
The lumbar plexus is a web of nerves (a nervous plexus) in the lumbar region of the body which forms part of the larger lumbosacral plexus.
The lumbar vertebrae are, in human anatomy, the five vertebrae between the rib cage and the pelvis.
The anterior divisions of the lumbar nerves, sacral nerves, and coccygeal nerve form the lumbosacral plexus, the first lumbar nerve being frequently joined by a branch from the twelfth thoracic.
The lumbosacral trunk is nervous tissue that connects the lumbar plexus with the sacral plexus.
The meningeal branches of the spinal nerves (also known as recurrent meningeal nerves, sinuvertebral nerves, or recurrent nerves of Luschka) are a number of small nerves that branch from the segmental spinal nerve near the origin of the anterior and posterior rami, but before the rami communicantes; rami communicantes are branches which communicate between the spinal nerves and the sympathetic trunk.
The Multifidus (multifidus spinae: pl. Multifidi) muscle consists of a number of fleshy and tendinous fasciculi, which fill up the groove on either side of the spinous processes of the vertebrae, from the sacrum to the axis.
A muscle fascicle is a bundle of skeletal muscle fibers surrounded by perimysium, a type of connective tissue.
Muscle weakness or myasthenia (my- from Greek μυο meaning "muscle" + -asthenia ἀσθένεια meaning "weakness") is a lack of muscle strength.
A myotome is the group of muscles that a single spinal nerve innervates.
A nerve is an enclosed, cable-like bundle of axons (nerve fibers, the long and slender projections of neurons) in the peripheral nervous system.
A nerve plexus is a plexus (branching network) of intersecting nerves.
The occipital bone is a cranial dermal bone, and is the main bone of the occiput (back and lower part of the skull).
The omohyoid muscle is a muscle that depresses the hyoid.
Along the length of the sympathetic trunks are ganglia known as ganglia of sympathetic trunk, sympathetic ganglia or paravertebral ganglia.
Perception (from the Latin perceptio) is the organization, identification, and interpretation of sensory information in order to represent and understand the presented information, or the environment.
The peripheral nervous system (PNS) is one of the two components of the nervous system, the other part is the central nervous system (CNS).
The psoas major (from Greek: ψόας - psóās: 'of the loins', genitive singular form of ψόα - psóa 'the loins') is a long fusiform muscle located on the side of the lumbar region of the vertebral column and brim of the lesser pelvis.
The quadratus lumborum is a muscle of the posterior abdominal wall.
Ramus communicans (plural rami communicantes) is the Latin term used for a nerve which connects two other nerves, and can be translated as "communicating branch".
The rectum is the final straight portion of the large intestine in humans and some other mammals, and the gut in others.
The rhomboid muscles, often simply called the rhomboids, are rhombus-shaped muscles associated with the scapula and are chiefly responsible for its retraction.
Sacral nerve stimulation, also termed sacral neuromodulation, is a type of medical electrical stimulation therapy.
In human anatomy, the sacral plexus is a nerve plexus which provides motor and sensory nerves for the posterior thigh, most of the lower leg and foot, and part of the pelvis.
The sacrum (or; plural: sacra or sacrums) in human anatomy is a large, triangular bone at the base of the spine, that forms by the fusing of sacral vertebrae S1S5 between 18 and 30years of age.
Sciatica is a medical condition characterized by pain going down the leg from the lower back.
The semispinalis muscles are a group of three muscles belonging to the transversospinales.
A sex organ (or reproductive organ) is any part of an animal's body that is involved in sexual reproduction.
The spinal cord is a long, thin, tubular bundle of nervous tissue and support cells that extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column.
The sternohyoid muscle is a thin, narrow muscle attaching the hyoid bone to the sternum, one of the paired strap muscles of the infrahyoid muscles serving to depress the hyoid bone.
The Sternothyroideus (or sternothyroid muscle) is a muscle in the neck.
The anterior division of the twelfth thoracic nerve (subcostal nerve) is larger than the others; it runs along the lower border of the twelfth rib, often gives a communicating branch to the first lumbar nerve, and passes under the lateral lumbocostal arch.
The suboccipital nerve is the dorsal primary ramus of the first cervical nerve (C1).
The sympathetic trunks (sympathetic chain, gangliated cord) are a paired bundle of nerve fibers that run from the base of the skull to the coccyx.
In human anatomy, the thigh is the area between the hip (pelvis) and the knee.
While under the Trapezius, the medial branch of the posterior division of the third cervical nerve gives off a branch called the third occipital nerve (also known as the least occipital nerve), which pierces the Trapezius and ends in the skin of the lower part of the back of the head.
In vertebrates, thoracic vertebrae compose the middle segment of the vertebral column, between the cervical vertebrae and the lumbar vertebrae.
The trapezius (or trapezoid) is a large paired surface muscle that extends longitudinally from the occipital bone to the lower thoracic vertebrae of the spine and laterally to the spine of the scapula.
The urinary bladder is a hollow muscular organ in humans and some other animals that collects and stores urine from the kidneys before disposal by urination.
The ventral ramus (pl. rami) (Latin for branch) is the anterior division of a spinal nerve.
In anatomy and neurology, the ventral root or anterior root is the efferent motor root of a spinal nerve.
The vertebral column, also known as the backbone or spine, is part of the axial skeleton.
The white ramus communicans (plural: rami communicantes) from Latin ramus (branch) and communicans (communicating) is the preganglionic sympathetic outflow nerve tract from the spinal cord.
Branch of coccygeal nerve, Branch of coccygeal nerves, Branch of sacral nerve, Branch of the cervical nerve, Branch of the sacral nerve, Branch of the thoracic nerve, Branch of thoracic nerve, Branches of cervical nerves, Branches of coccygeal nerves, Branches of sacral nerves, Branches of the cervical nerves, Branches of the coccygeal nerves, Branches of the sacral nerves, Branches of the thoracic nerves, Branches of thoracic nerves, Cervical nerve, Cervical nerves, Cervical spinal nerve, Cervical spinal nerves, Coccygeal nerve, Coccygeal nerves, Nervi sacrales, Nervi spinales, Nervi thoracici, Nervus coccygeus, Nervus spinalis, Nervus spinalis C0, Nn spinales, S6 nerve, Sacral nerve, Sacral nerve roots, Sacral nerves, Sacral spinal nerves, Spinal nereves, Spinal nerves, Spinal tissue, T9 spinal nerve, Thoracic nerve, Thoracic nerves, Thoracic spinal cord, Thoracic spinal nerves.