Anatomy/embryolgy 1
Terms
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- name the muscular components formed from the 4th branchial arch
- cricothyroid
- component (not germ layer) that forms the tubotympanic recess and auditory tube
- 1st pharyngeal pouch
- chamber of the heart which forms its right border
- right atrium
- ein that accompanies right coronary artery around to the posterior surface of the heart
- small cardiac v
- week in which the vascular system appears
- 3
- component that specifically develops from the saccule
- cochlear duct
- the ligamentum arteriosum connects which two vessels
- aortic arch and left pulmonary a
- the spleen develops from
- ?
- suspensory ligaments travel from the lens to the
- ciliary body
- the gut develops from part of the
- yolk sac
- outer rim of auricle
- helix
- week in which the vascular system appears
- 3rd
- structurally define the lateral border of the superior mediastinum
- plueral sacs of lungs
- part of the conduction system known as the pacemaker
- sa node
- name given to the two small openings into the superior and inferior lacrimal canaliculi
- superior & inferior lacrimal puncta
- name the specific mediastinum in which the distal part of the phrenic nerve is found
- middle
- name vessels which develop and remain in adult to supply the iris and ciliary body
- long posterior ciliary, anterior ciliary
- structurally define the upper border of the superior mediastinum
- plane of the 1st rib
- name the specific mediastinum in which the aortic arch is found
- superior
- named branch of cn 7 passing through the middle ear just medial to the malleus, conducts taste and some autonomics to the salivary glands
- chorda tympani
- list the origin of the ciliary mm
- mesoderm
- give the derivatives of the left horn of sinus venosus
- coronary sinus
- besides IVC and SVC, name two tributaries of the right atrium
- R coronary v, venum minimarum
- structurally define the lateral border of the superior mediastinum
- pleura of lungs
- when does the embryo take on a human appearance
- fetal period
- what are the derivatives of the hyaloid artery
- the central artery of the retina and hyaloid canal ?
- upper smooth area of the left ventricle that guides blood to a great artery
- aortic vestibule
- givev the composition of the parietal pericardium
- fibrous outer layer, serous inner layer
- upper smooth area of the right entricle that guides blood to a great artery
- conus arteriosus
- name given to the entire posterior surface of the heart
- base
- foramen ovale forms within this embryonic structure
- septum secundum
- the pre-embryonic period is
- 0-2
- specifically, where are the maculae located
- walls of utricle and saccule
- give the derivatives of the right horn of the sinus venosus
- principal cavity of right atrium
- list the origin of the following component of the eye: conjunctival epithelium
- ?
- the definitive derivative of the left common cardinal vein
- oblique vein of left atrium
- fluid found in membranous labyrinth
- endolymph
- there are weak anastomoses between what names arteries on the surface of the heart
- anterior and posterior interventricular, posterior circumflex and right coronary
- what barriers must the sperm pass? (in order)
- corona radiata, zona pellucida, oocyte membrane
- name the muslces that adduct the eye
- medial superior and inferior rectus mm
- what causes coloboma
- incomplete closure of the choroid fissure
- 3 grooves seen on the external heart
- coronary sulcus, posterior interventricular sulcus, anterior interventricular sulcus
- discuss in detail the formation of the pulmonary trunk and ascending aorta
- the truncus arteriosus (superior portion of bulbus cortus) ascends and twists as the R and L conotruncal septa push inward to divide the aorta and pulmonary trunk
- what is a blastocyst
- hollow ball of about 58 cells
- name given to raised upper margin of the fossa ovalis
- limbus of fossa ovalis
- the 2n number of chromosomes is
- 46
- also known as the mitral valve
- bicuspid
- specifically,why is the sinuatrial fold important
- it shifts the opening into the sinus verosus to the right side of the ??
- companion vessel of anterior interventricular
- great cardiac v
- normally, the specific vessel which directly drains 5,6,7 and 8 left posterior intercostal veins
- accessory hemiazygous
- how does blood enter the coronary arteries
- recoil of the aorta
- disucss the mechanics of formation of the anterior chamber of the eye
- disintegration of mesoderm
- the epithelium of the lungs develops from
- endoderm
- make a short flow diagram showing the differentiation of a smoite
- scleratome <-- somite --> dermatome-->myotome
- structure that transmits the right crus of the AV bundle across the right ventricular cavity
- septomarginal trabeculae
- when does the morula form
- 3 days (post fertilization)
- specifically, why is the sinuatrial fold important
- it moves the opening of the sinovenarium to the right
- portion of conduction system of the heart innervated by sympathetics from the left
- av node
- list the hypomere derivatives of the lumbar myotome
- quadratus lumborum
- specific name given to the area where the coronary arteries begin
- sinuses of the aortic valve
- chamber of cochlea into which round window opens
- scala tympani
- muscles lining auricles only
- pectinate mm
- name the papillary mm of the right ventricle
- septal, anterior, posterior
- besides the inferior and superior vena cava, name two tributaries of the right atrium
- anterior cardiac veins, coronary sinus
- vessel which accompanies the posterior interventricular artery of heart
- middle cardiac vein
- the SA node is located in the right atrial wall between the auricle and superior vena cava at the upper end of the
- crista terminalis
- the ____ fits into the ___ window
- stapes, oval
- name tributaries of the azygous
- right ascending lumbar, branch of the IVC, right posterior intercostals, right highest intercostal, hemiazygous, accesory hemiazygous, right bronchial
- list the origin of the pigment layer of the iris
- neuroectoderm
- protion of the conduction system of the heart innervated by the r vagus n
- SA node
- when comparing thickness of the right ventricle compared to the left, it is (precisely)
- 1/3 the size
- name the 4 visceral branches of the descending thoracic aorta
- pericardial aa, bronchial aa, esophageal aa, mediastinal aa
- specific artery that supplies the upper surface of the respiratory diaphragm
- superior phrenic a
- the acrosome reaction is
- perforation of the acrosome head (of sperm) and release of enzymes to allow the sperm to penetrate 2nd oocyte barrier
- _____ embryonic component that forms the nontrabeculated part of the right ventricle
- conus cordis
- when does the zona pellucida dissappear
- before implantation
- name the cusps of the pulmonary valve
- anterior left and right
- the right pulmonary artery runs ____ to the _______ part of the aorta
- posterior, ascending
- vein that drains the upper 2,3,4th intercostal spaces
- highest intercostal vein
- ____ forms the auricles
- primitive common atrium
- the day when the heart tubes fuse
- 21
- specific chamber of the heart which lies against the esophagus
- left atrium
- hypaxial muscles are ______ (pre/postaxial) in position to the ____ axis
- preaxial, spinal
- also known as mitral valve
- bicuspid valve
- extends from SVC to IVC, divides right artium into two parts
- crista terminalis
- the day when the heart begins tobeat
- 22-23
- upper smooth portion of the left ventricle that guides blood toa great artery
- aortic vestibule
- the triangular cochlear duct is separted from the scala vestibuli by the _____ and separated from the scala tympani by the ______
- vestibular membrane, basilar membrane
- list the origin of the following component of the eye: lacrimal gland epithelium
- surface ectoderm
- a hydatidiform mole is ?
- non-invasive benign tumor that develops from chorionic remnants
- discuss the mechanics of the formation of the anterior chamber of the eye
- forms from a hole formed in the mesenchymal tissue anterior to the lens
- small reddish body of skin containing sebaceous and sweat glands, produces a whitish secretion
- lacrimal caruncula
- besides the muscles of facial expression, list 3 muscles formed from the mesoderm of the second branchial arch
- stapedius, posterior belly of digastric, stylohyoid
- define the lower border of the superior mediastinum
- horizontal line through sternal angle and t4-5 disk
- name given to the right AV valve
- tricuspid
- during early development, the primitive heart is suspended in the _________ cavity by a mesentary known as the dorsal _____
- pericardial, mesocardium
- chamber between the iris and the lens
- posterior
- how long does capacitation take?
- 7 hours
- the hypoblast forms
- endoderm
- disucss the mechanics of formation of the lens
- optic placode
- name the adductors of the eye
- medial, superior, and inferior rectus mm
- which pulmonary artery is longest and largest
- right
- name the cusps of the left av valve
- anterior, posterior
- the azygous v runs superiorly then arches over the ____ to empty into the _____
- root of the right lung, svc
- name given tot he string-like structures that attach to the cusps of the av valves, prevent eversion of cusps
- chordae tendinae
- the apex of the heart points
- anterior, inferior, and to the left
- structurally define the upper border of the superior mediastinum
- plane of 1st rib
- during their course, the phrenic nn pass downward _____ to the roots of the lungs and onto the surface of the ____ before entering the diaphragm
- anterior, pericardial sac
- as the left recurrent laryngeal n loops under the arch of the aorta, it lies immediately to the left of the
- ligamentum arteriosum
- discuss the mechanics of the formation of the lens
- forms from induction when the otic vessicle comes close to the surface ectoderm thus forming the lens palcade, pit and vesicle
- what is cleavage
- a series of mitotic divisions
- smallest sized vessels, drain directly into the right atrium and other chambers
- venum minimarum
- portion of the condiction system located in the lower part of the right atrium
- AV node
- Give the derivatives from the cartilage of the 6th branchial arch
- cartilages of the larynx
- which pulmonary artery runs posterior to the ascending aorta
- right
- portion of osseous labyrinth into which oval window opens
- vestibule
- name given to right av valve
- tricuspid
- complete the following flow chart of aqueous humor in the eye: posterior chamber-->anterior chamber-->trabeculae-->
- canal of schlemm, vein
- ____ forms the trabeculated part of the left ventricle
- primitive ventricle
- lateral and cephalocaudal folding occur duringwhat week
- 4th
- what causes the oocyte to finish its 2nd meotic division
- penetration of the oocyte cell mambrane
- name the abductors of the eye
- superior and inferior obliques, lateral rectus
- forsal projection anterior to concha and over the orifice of the external aucoustic meatus
- tragus
- name given to the distal 1/3 of the bulbus cordis
- truncus arteriosus
- name the tributaries of the hemiazygous v
- ascending lumbar, branch of left renal v, left subcostal, caudal 3-4 left posterior intercostal, left bronchial, some esophagela and mediastinal
- trinagular space at the medial angle of eye where tears collect
- lacrimal lake
- minute small cavities at the junction of iris and cornea (drains aqueous humor from the anterior chamber)
- trabeculae
- septal formation in the common atrium is first indicated by the appearance of _____________
- septum primum
- the flow of aqueous humor in the eye =
- ciliary body, posterior chamber, pupil, anterior chamber, trabeculae, scleral venous sinus (canal of schlem), vein
- what is the fate of the preotic myotomes
- extrinsic muscles of the eye
- forms the trabeculated part of the left ventricle
- original ventricle
- the primitive pit and node give rise to
- the notocord
- the yolk sac is also calle dthe
- exocoelomic cavity
- the fetal period is _____ weeks postfertilization
- 9-38
- give the derivatives from the cartilage of the 6th branchial arch
- laryngeal cartilages
- uteroplacental circulation begins as
- lacunae tap maternal sinusoids
- name the receptros for static equilibrium
- maculae
- what specific structure is/are derived from the inferior part of the right venous valve ofthe sinuatrial orifice
- the valve of the coronary sinus and the valve of the inferior vena cava
- name vessels whish develop and remain in the adult to supply the pigment layer of the retina
- short posterior ciliary aa
- germ layer that forms membranous labyrinth
- ectoderm
- specific chamber of the heart which lies against the esophagus
- left atrium
- six elevations termed ____ appear on each side of the first pharyngeal cleft. specifically, the elveations eventually form the ____
- hiollocks, auricle/pinna
- valve that gaurds the exit of the rgiht ventricle
- pulmonary
- ridge like muscles which line ventricles of the heart but ar enot associated with valve function
- trabeculae carnae