Yolk Sac: From 2 Different Sources
The membranous sac, otherwise known as the vitelline sac, that lies against, and is attached to, the front of the embryo during the early stages of its existence. During development, the sac decreases proportionately in size to the body, reducing finally to a narrow duct that passes through the umbilicus. The yolk sac is believed to assist in the transportation of nutrients from the mother to the early embryo.
(vitelline sac) the membranous sac, composed of mesoderm lined with endoderm, that lies ventral to the embryo. It is one of the *extraembryonic membranes. Its initially wide communication with the future gut is later reduced to a narrow duct passing through the *umbilicus. It probably assists in transporting nutrients to the early embryo and is one of the first sites where blood cells are formed.
These are five pairs of CNS nerves that exit through the sacral foramen and sacral hiatus, and bring information in and out of the spinal cord. Much of their function relates to the sciatic nerve, and they bring information in from the skin sensory zones (dermatomes) of the heel, back of the legs, buttocks, and the pelvic floor.... sacral nerves
The portion of the SPINAL COLUMN near its lower end. The sacrum consists of ?ve vertebrae fused together to form a broad triangular bone which lies between the two haunch-bones and forms the back wall of the pelvis.... sacrum
A sweetening agent that is 400 times as sweet as cane sugar, but with no energy content. Apart from its rather bitter aftertaste, it has practically no e?ect on the tissues, and escapes from the body unchanged. Destroyed by heat, saccharine is not used in cooking, but is an important component of all diabetic and low-calorie diets.... saccharine
Another name for YEAST.... saccharomyces
The ?ve fused vertebrae that link the thoracic spine and the coccyx and form the sacrum (see SPINAL COLUMN).... sacral vertebrae
One of a pair of joints between each side of the SACRUM and each ILIUM. Strong ligaments between the ilium and the sacrum stabilise the joint, permitting little movement. Childbirth or strenuous sporting activities may strain the joint, causing pain in the lower part of the back and buttocks. Such strains may take a long time to mend; PHYSIOTHERAPY is the treatment. The joint(s) may become in?amed (see SACROILEITIS).... sacroiliac joint
An inherited recessive condition in which there is abnormal accumulation of lipids (see LIPID) in the BRAIN. The result is blindness, mental retardation and death in early childhood. The disease can usually be prevented by genetic counselling in those communities in which the disease is known to occur.... tay sachs disease
Inflammation of a sacroiliac joint. Causes include ankylosing spondylitis, rheumatoid arthritis, Reiter’s syndrome or arthritis associated with psoriasis. The main symptom is pain in the lower back, buttocks, groin, and back of the thigh. Treatment is with nonsteroidal antiinflammatory drugs.... sacroiliitis
Linn.
Family: Gramineae; Poaceae.
Habitat: Uttar Pradesh, Bihar and Punjab.
English: Sugarcane, Noble Cane.
Ayurvedic: Ikshu, Dirgha-chhada, Bhuurirasa, Morata, Asipatra, Madhutrna, Gudamuula, Trnarasa.
Unani: Gannaa, Naishakar.
Siddha/Tamil: Karumbu, Nanal.
Action: Cane Juice—restorative, cooling, laxative, demulcent, diuretic, antiseptic. Used in general debility, haemophilic conditions, jaundice and urinary diseases.
The Ayurvedic Pharmacopoeia ofIn- dia recommends the juice of the stem in haemorrhagic diseases and anuria; and the root in dysuria.Sugarcane juice contains surcose (70-80% of soluble solids in the juice), glucose and fructose. Non-sugar constituents present in the cane juice are carbohydrates other than sugars. As- paragine and glutamine are prominent amino acids in the juice. Other amino acids include alanine, gamma- amino butyric acid, aspartic and glutamic acids, glycine, leucine, lysine, serine and tyrosine. The presence of phenylalanine, histidine, valine, proline, threonine and arginine, pipecolic acid, methionine and tryptophan has also been reported.Aconitic acid constitutes about three-fourths of the total carboxylic acid present in the juice.Vitamins present in the juice are: thiamine, riboflavin, niacin, pantothenic acid, biotin, and vitamin D; enzymes include diastase, invertase, lac- tase, peroxidase, tyrosinase.Phenols in the cane juice are mainly polyphenols from tannin and antho- cyanin from the rind.Cane juice contains glycolic acid which improves skin complexion as it has antiwrinkle effect, prevents scaly growth and increases natural collagen and elastin in the skin.Enzymes present in the seeds include large quantities of diastase and invertase.An ester, vanilloyl-l-O-beta-D-glu- coside, has been isolated from the bagasse.The leaves contain alpha-amylase and glutathione-S-transferase.
Dosage: Stem—200-400 ml juice; rootstock—15-30 g for decoction. (API, Vol. IV.)... saccharum officinarum
(Greek) Form of Alexandra, meaning “helper and defender of mankind” Sachenka, Sachka, Sache, Sachia, Sachah, Sachea... sacha
(Hindi) Having consciousness Sachett, Sachette... sachet
(See SACROILIAC JOINT.) In?ammation of one or both sacroiliac joints, which lie between the sacrum and the iliac bones. The condition may be the result of RHEUMATOID ARTHRITIS, ankylosing spondylitis (see under SPINE AND SPINAL CORD, DISEASES AND INJURIES OF), REITER’S SYNDROME, or the arthritis that occurs with PSORIASIS or infection. Sacroileitis causes pain in the lower back, buttocks, thighs, and groin. Sti?ness may occur with ankylosing spondylitis. NON-STEROIDAL ANTI-INFLAMMATORY DRUGS (NSAIDS) relieve the symptoms. If the cause is infection, antibiotics should be used.... sacroileitis
A serious inherited metabolic disorder (see metabolism, inborn errors of) that causes premature death. The cause is deficiency of the enzyme hexosaminidase A, which results in a buildup in the brain of a harmful substance. Symptoms usually appear after age 6 months and include blindness, paralysis, and seizures leading to death. Diagnosis is made by enzyme analysis of white blood cells. It is now largely prevented by genetic.... tay–sachs disease
n. (pl. saccades) a rapid movement of the eye used to shift gaze from one object to another. It can be done voluntarily or occurs as a reflex triggered by a visual stimulus in the peripheral visual field.... saccade
(saccharo-) combining form denoting sugar.... sacchar
n. a carbohydrate. See also disaccharide; monosaccharide; polysaccharide.... saccharide
(sacculus) n. the smaller of the two membranous sacs within the vestibule of the ear: it forms part of the membranous *labyrinth. It is filled with fluid (endolymph) and contains a *macula. This responds to gravity and relays information to the brain about the position of the head.... saccule
n. a sac or pouch. The saccus endolymphaticus is the small sac connected to the saccule and utricle of the inner ear by the *endolymphatic duct.... saccus
(caudal regression syndrome) a severe neural tube defect specific to diabetic pregnancies. The risk may be correlated with the *glycated haemoglobin (HbA1c) level.... sacral agenesis
combining form denoting the sacrum. Examples: sacrococcygeal (relating to the sacrum and coccyx); sacrodynia (pain in); sacroiliac (relating to the sacrum and ilium).... sacro
n. surgery using minimally invasive techniques and liquid cement to stabilize fragile sacral fractures, which previously would have been treated with rest and analgesia.... sacroplasty
n. surgical treatment of *vault prolapse, which can be an abdominal or laparoscopic procedure. It involves suspending the prolapsed vaginal vault to the sacral promontory using a synthetic mesh or biological material; however, it is associated with a significant risk of haemorrhage and mesh erosion. Posterior intravaginal slingplasty (or infracoccygeal sacropexy) is a more recent technique in which a neo-uterosacral ligament (which supports the vagina) is formed. This helps to relocate the vaginal apex and restore the normal vaginal axis. The procedure appears to have similar efficacy to those currently in use but with minimal surgical morbidity.... sacrocolpopexy
a surgical technique to correct vaginal *vault prolapse after hysterectomy. A stitch is made from the apex of the vagina to the sacrospinous ligament (which supports the vagina) approximately 2 cm medial to the ischial spine. The main complication is bleeding and formation of a haematoma.... sacrospinous ligament fixation
(deutoplasm) n. a substance, rich in protein and fat, that is laid down within the egg cell as nourishment for the embryo. It is absent (or nearly so) from the eggs of mammals (including humans) whose embryos absorb nutrients from their mother.... yolk
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