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Anatomy embryology histology videos & books

Logo of telegram channel anatomyvideoss — Anatomy embryology histology videos & books A
Logo of telegram channel anatomyvideoss — Anatomy embryology histology videos & books
Channel address: @anatomyvideoss
Categories: Literature
Language: English
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The latest Messages

2024-03-13 15:36:01 Correct Answer - A
Ans. is 'a' i.e., Towards metaphysis [Ref Textbook of general
anatomy p. 80]

Nutrient artery

It enters the middle of the shaft through a nutrient foramen, runs
obliquely through the cortex, and then divides into ascending and
desending branches that run towards metaphysis.

Each branch subdivides into a number of smaller parallel vessels
which enter the metaphysis and form hair-pin loops.

The loops anostomose with epiphyseal,metaphyseal and periosteal arteries.

Therefore, metaphysis is the most vascular zone of the long bone.

The nutrient artery supplies the medullary cavity and inner-two third of cortical bone of diaphysis and metaphysis

@anatomyvideoss
12.8K views12:36
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2024-03-07 22:41:01 Correct Answer - B
Ans. is 'b' i.e., Lower border of T4

Trachea bifurcates at carina, at the level of lower border of T, or T4 -
T5 disc space.

@anatomyvideoss
13.3K views19:41
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2024-02-24 11:59:01 Correct Answer - A
Ans. is 'a' i.e., Caudate lobe

Epiploic foramen (foramen of Winslow or aditus to lesser sac) is a slit-like opening through which lesser sac communicates with greater sac.

It is situated at the level of T12 vertebra.

Its boundaries are:-
Anterior:- Right free margin of lesser omentum (contains portal vein, hepatic artery proper and bile duct).
Posterior:- IVC, right suprarenal gland and T12 vertebra.
Superior:- Caudate lobe of the liver.
Inferior:- 1st part of the duodenum and horizontal part of the hepatic
artery

@anatomyvideoss
13.1K views08:59
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13.3K views07:22
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2024-02-10 14:05:04 Correct Answer - D
Ans. is 'd' i.e., IV

The gall bladder lies on the inferior surface of the liver closely
related to segment IV or the quadrate lobe.

Anatomically liver is divided into a large right lobe and a small left
lobe by line of attachment of falciform ligament (anterosuperiorly), fissure for ligamentum teres (inferiorly), and fissure for ligamentum
venosum (posteriorly).
Right lobe is much larger and forms five sixth of liver and left lobe forms only one sixth.

Caudate lobe and quadrate lobe are parts of anatomical right lobe.

The physiological left lobe is composed of 4 segments designated Ito IV and is supplied by left branch of hepatic artery, left branch of portal vein and drained by left hepatic duct.

The physiological right lobe consists of segment V, VI, VII and VIII and is supplied by right hepatic artery, right branch of portal vein and drained by right hepatic duct

@anatomyvideoss
16.2K views11:05
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2024-02-01 11:15:06 Correct Answer - A
Ans. is '13' i.e., T4
Trachea bifurcates at carina, at the level of lower border of T4 or
T⁵ disc space.

Structure Cervico thoracic level
Tracheal bifurcation T4-T5

Arch of aorta Begins and ends at T4

Xiphoid process T9

Splenic axis Along 10th rib

Carotid bifurcation, Hyoid bone C3

Upper border of thyroid cartilage C4

Level of cricoids cartilage C6

Lumbar level
Celiac trunk T12 - L I
Superior mesenteric artery Ll
Transpyloric plane Lower border of Ll

@anatomyvideoss
20.3K views08:15
Open / Comment
2024-01-02 22:10:03 Correct Answer - B
Ans. (B) Right atrium

External features of heart
The heart has following borders and surfaces :-

A) Borders Right border :- Formed by right atrium.
Left border (obtuse margin):- Formed mainly by left ventricle and
partly by left auricle (in its upper most part).
Inferior border (acute margin):- Formed mainly by right ventricle and partly by left ventricle near apex.

Upper border :- Mainly by left atrium and partly by right atrium where SVC enters.
Apex :- Formed by left ventricle.

B) Surfaces
Anterior (sternocostal) surface :- Formed mostly by right ventricle
(major) and right auricle and partly by left ventricle and left auricle.
Inferior (diaphragmatic) surface :- It is formed by left ventricle (left
2/3) and right ventricle (right 1/3). It is traversed by posterior
interventricular groove (PIV) containing PIV branch of RCA

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13.1K views19:10
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14.7K views07:29
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2023-12-14 11:58:01 Correct Answer - C
Ans. is'c'i.e., Constrictor pupillae [Ref: Gray's 39h/e p. 7101
Intraocular muscles (intraocular muscles)
→ Intraocular muscles are -

A) Muscles of iris
→ There are two types of muscles in iris that control the size
of pupil:

1. The iris sphinctor or constrictor pupillae (circular muscles):-
These muscles are innervated by the postganglionic parasympathetic fibres from Edinger westphal nucleus via 3'd nerve and ciliary ganglion. These muscles cause constriction of pupil (Miosis).

2. The iris dilator or dilator pupillae (radial muscles) → These
muscles are innervated by sympathetic system via postganglionic sympathetic fibres for the dilator pupillae from
neurons in the superior cervical ganglion. These muscles cause
pupillary dilatation (mydriasis).

B) Ciliary muscles;--> these are innervated by the postganglionic
parasympathetic fibers from EWN via 3rd nerve and ciliary ganglion. These muscles help in accommodation.

@anatomyvideoss
13.4K views08:58
Open / Comment
2023-12-05 10:35:06 Correct Answer - C
Ans. is 'c' i.e., Pronator teres

@anatomyvideoss
15.1K views07:35
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