Exam Flashcards
Epididymis:
Tube connecting efferent ducts to vas deferens
Three functions of the male reproductive system:
Production of androgens, production storage and nourishment of male gametes, introduce gametes into female reproductive tract
Bulbourethral gland functions:
Attached to urethra, not obstructed by prostate, secretes pre ejaculate to neutralise trace urine and lubricate passage for spermatozoa
Seminal vesicles
Secrete fluid that makes up 50-70% of semen.
Vas deferens:
Peristalsis during ejaculation propels sperm into urethra, collecting fluids from seminal vesicle and prostate.
Prostate:
Secretes alkaline, milky fluid. Sperm have longer lifespans and motility in prostate secretions.
Testes suspended from:
Spermatic cord
Site of spermatogenesis:
Seminiferous tubules
Spermatogenesis cycle:
Wall of tubule contains Sertoli cells (nutrients): mitosis, meiosis 1, meiosis 2, early and late spermatids, spermatozoa, lumen.
Spermiogenesis:
Spermatids mature into spermatozoa
Leydig cells secrete:
Androgenic steroids
Inhibin secreted by:
Sertoli cells
Vas deferens enters abdominal cavity through:
Inguinal canal
Oogenesis:
Mitosis (completed before birth), meiosis 1 (begins before birth, completes after puberty), meiosis 2 (as released oocyte), meiosis 2 occurs if fertilisation occurs
Female hormonal control. Hypothalamus releases:
GnRH
Ovaries release:
Progesterone, oestrogen and inhibin
FSH:
Stimulates growth of follicles, promotes ovaries to secrete oestrogen, promotors secretion of inhibin by ovaries
Ovulation caused by:
Spike in LH
Formation of corpus luteum caused by:
LH
Corpus luteum secretes:
Progesterone
Progesterone prepares body for:
Pregnancy
The Pill inhibits:
GnRH
Phagocyte examples:
Monocytes in blood, tissue macrophages, neutrophils in blood
Hypothalamus produces _______ hormones:
Releasing hormones
Hypothalamus hormones (x1-7)
GnRH, TRH, PRF, PRIF, CRH, GHRH, SS
Posterior pituitary hormones:
ADH, oxytocin
Anterior pituitary hormones (x3-6):
TSH, LH, FSH, GH (growth hormone), PRL (prolactin), ACTH
Oxytocin (posterior pituitary) to:
Uterine muscles and mammary glands
ADH (posterior) to:
Kidney tubules
ACTH (anterior pituitary) to:
Adrenal cortex
Growth hormone (anterior pituitary):
Entire body
Prolactin (anterior pituitary) to:
Mammary glands
Endorphins from the _________ go to the _________:
Anterior pituitary to pain receptors in the brain
T3/T4 secreted from:
Follicular cavities
TSH stimulates breakdown of _______ into _____ and _____
Thyroglobulin into T4 and T3
Calcitonin produced:
By C cells in thyroid
Calcitonin lowers:
Calcium and phosphate levels in blood
Steroid hormones (x3):
Mineralcorticoids, glucocorticoids, sex steroids
Example of mineralcorticoid:
Aldosterone
Example of glucocorticoids:
Cortisone
PNS:
Peripheral nervous system
PNS contains:
Cranial nerves, spinal nerves
CNS comprised of:
Brain, spinal cord
Somatic nervous system comprised of:
Motor - skeletal muscle, sensory
Autonomic comprised of:
Sympathetic, parasympathetic
Components of cerebrum:
Frontal, parietal, temporal, occipital lobes
Frontal lobe functions:
Motor cortex, intellect, planning, mood, social judgment
Parietal lobe functions:
Somatosensory cortex, general sensation and taste
Temporal lobe functions:
Auditory cortex
Occipital lobe function:
Visual cortex
Meninges layers (x3):
Under skin, periosteum and skull: dura mater, arachnoid, pia mater
Between arachnoid and pia mater:
Subarachnoid space, contains cerebrospinal fluid
Cranial nerve pairs:
12 pairs
Sensory cranial nerves:
Olfactory, optic, vestibulocochlear
Motor cranial nerves:
Oculomotor, trochlear, abducens, accessory, hypoglassal
Both motor and sensory cranial nerves:
Trigeminal, facial, glossopharyngeal, vagus
Sympathetic and parasympathetic NS regulates:
Homeostasis
Multipolar neurones receive action potentials through ________ and out of the _________:
Through Cell body and out of the synaptic terminals
Blood: plasma percentage:
55%
Most abundant plasma protein:
Albumin
Albumin (produced and influences):
Produced in liver, influences blood pressure, flow, fluid balance
Elements of blood (x9):
Monocytes, platelets, small lymphocytes, large lymphocytes, neutrophil, young neutrophil, basophils, eosinophils, erythrocytes
Haemoglobin structure:
Four protein chains (globins), each with haem group with iron
Erythrocyte sedimentation rate:
Men = age/2 or lower Female = (age+10)/2
Leukocytes (White blood cells):
Granulocytes, agranulocytes
Granulocytes in order of most to least:
Neutrophils, eosinophils, basophils
Agranulocytes in order of most to least:
Lymphocytes, monocytes
Neutrophil functions:
Phagocytosis and bacterial infections
Eosinophil functions:
Parasitic infections and allergies such as asthma
Basophil functions:
Chicken pox, sinusitis, diabetes
Lymphocyte functions:
Infections, immune responses, destroy cancer cells, virally infected cells
Monocyte functions:
Become tissue macrophages
Platelet functions (x5):
Secrete clotting factors, factors for endothelial repair, vasoconstrictors in broken vessels, form temporary platelet plugs, dissolve old blood clots
Red blood cell productions stimulated by:
Erythropoietin
Neg feedback of hypoxemia:
Liver and kidneys sense hypoxemia, secrete erythropoietin, stimulate bone marrow
Primary Haemostasis:
Temporary platelet plug (platelet adhesion, platelet aggregation)
Secondary haemostasis:
Coagulation, stable clot
Vascular spasm:
Prompt constriction of a broken vessel
Vascular spasm triggered by:
Pain receptors, injury to smooth muscle, platelets release chemical (serotonin)
What is produced by the choroid plexus of the ventricles?
Cerebrospinal fluid
Blog group A contains antigen and antibody:
A and anti-B
Blood group B contains antigen and antibody:
B and anti-A
AB contains antigen ___ and antibody ____:
A+B and none
O blood antigen _____ and antibody ____:
None and anti A, anti B
Fallopian tube structure:
Fimbriae - ampulla - isthmus - uterus
Uterus comprised of:
Cervix, body, fundus
Bones contains organic and inorganic components. Properties:
Organic: made up of collagen and protein complexes
Inorganic: deposition of mineral salts (calcium phosphate and calcium carbonate)
OsteoBlasts:
Produce new bone, secrete osteoid and are responsible for mineral deposition
Osteocytes:
Mature bone cells, located in lacunae, maintain matrix
OsteoClasts:
Remove mineral from matrix, responsible for bone remodelling
Two types of bone tissue:
Compact and cancellous
Compact bone:
Located on surface, resists stress
Cancellous bone:
Located interior of bone, also called spongy bone, contains haphazard arrangement of trabeculae and marrow is located in the spaces
Bone shapes:
Long, short, flat, irregular
Fracture classifications (x6):
Green stick, comminuted, linear, transverse, oblique, spiral
Joint types - functional classification (x3):
Synarthrosis (little no movement)
Amphiarthrosis (slightly moveable eg intervertebral discs)
Diarthroses (freely moveable eg hip)
Immune tissues (x6):
Marrow, thymus, spleen, lymph nodes, lymphatics, blood
Immune system tissue cells:
T lymphocytes, dendritic cells, mast cells, macrophages
Immune system molecules:
Lysozyme, chemokines, cytokines
How do extra cellular pathogens spread?
Lymphatics/bloodstream
How do intra cellular pathogens spread?
Cell to cell contact
Innate immunity types:
Physical barriers, anti microbial factors, phagocytes, inflammation/fever
Innate immunity of eyes:
Tears, lysozyme
Innate immunity of respiratory tract:
Mucus, ciliated epithelium
Innate immunity of skin:
Sweat, sebum, shedding, antimicrobials, low pH
Innate immunity of GI tract:
Stomach acidity, intestinal pH, mechanical flushing such as vomiting/defecation, normal flora, lysozyme
Innate immunity of genitourinary tract:
Urine, vaginal secretions, lysozyme
Cytokines innate immunity:
Virus infected cell produces IFN. Triggers anti viral response.
T cells production:
Produced in bone marrow, mature in thymus
B cells production:
Produced by bone marrow, mature in marrow
Molecules recognised by antibodies are called:
Antigens
Antigen examples:
Proteins, carbohydrates, lipids, DNA
Kidney blood supply:
Renal arteries enter, veins leave
Renin produced by:
Kidney
Anterior pituitary releases -trophins:
Somatotrphins, thyrotrophins, corticotrophins, lactotrophins, gonadotropins