Sex Determination by Skeleton

Sex Determination by Skeleton

Q. 1 Skull of a male differs from that of a female by all of the following EXCEPT:
 A Capacity greater than 1500 cc
 B Muscular markings over occiput are less marked
 C Orbits are square
 D Frontal eminence smal1
Q. 1 Skull of a male differs from that of a female by all of the following EXCEPT:
 A Capacity greater than 1500 cc
 B Muscular markings over occiput are less marked
 C Orbits are square
 D Frontal eminence smal1
Ans. B

Explanation:

 

Male

Female

General

Larger, longer (Dolichocrania)

Smaller, lighter (Brachycrania)

Forehead

Steeper, less rounded

Vertical, rounded, full

Glabella

More Prominent

Less prominent

Frontonasal junction

Distinct angulation

Smoothly curved

Orbits

Square, rounded margins

Rounded, sharp margins

Zygomatic arch

More Prominent

Less prominent

Frontal & Parietal eminences

Small

Large

Occipital area

Prominent

Not prominent

Palate

Large, U-shaped

Smaller, Parabola like

Capacity

1500 – 1550 cc.

1350 – 1400 cc.


Q. 2 Parts  of  some  human  skeletal   remains are  brought  to  you.  The  pelvis  is  complete, yet  the  individual   bones   of  the  pelvis,   the ilium, ischium,  and pubis have just started  to fuse  together.  The  subpubic  angle  you estimate at 60° and the pelvic brim has a distinctive  heart  shaped  appeareance. On the basis   of   this   information,   you   guess   the remains  are of which of the following?
 A 3-year-old female
 B 4-year-old male
 C 14-year-old male 
 D 30-year-old female
Q. 2 Parts  of  some  human  skeletal   remains are  brought  to  you.  The  pelvis  is  complete, yet  the  individual   bones   of  the  pelvis,   the ilium, ischium,  and pubis have just started  to fuse  together.  The  subpubic  angle  you estimate at 60° and the pelvic brim has a distinctive  heart  shaped  appeareance. On the basis   of   this   information,   you   guess   the remains  are of which of the following?
 A 3-year-old female
 B 4-year-old male
 C 14-year-old male 
 D 30-year-old female
Ans. C

Explanation:

Because the sub- pubic angle is about 60° and the pelvic brim is heart shaped, you are look ing at a male.  The  bones  of  the  pelvis  arise  from three different centers of ossification and generally fuse together at about puberty through the twenty-third year, thus you know you have to be looking at a 14-year-old male, not a 3-year-old or an 80-year- old male.


Q. 3

You are examining the pelvic bone obtained from a shallow grave. You note that the preauricular sulcus is shallow and narrow without marked edge. Which of the following would be the MOST appropriate conclusion that you would come to regarding the above mentioned pelvis?

 A

It is of a male

 B

It is of a female

 C

The individual was above 60 years

 D

The individual was above 50 years

Q. 3

You are examining the pelvic bone obtained from a shallow grave. You note that the preauricular sulcus is shallow and narrow without marked edge. Which of the following would be the MOST appropriate conclusion that you would come to regarding the above mentioned pelvis?

 A

It is of a male

 B

It is of a female

 C

The individual was above 60 years

 D

The individual was above 50 years

Ans. A

Explanation:

The only thing that can be assumed from the above description is that it belonged to a male.

In females the preauricular sulcus is broad and deep especially in parous women.

The sex of an individual can be determined with an accuracy of 95% by examination of the pelvic bone alone. 

Ref: Textbook of Forensic Medicine and Toxicology by Narayan Reddy, Edition 21, Page – 54,55.

Quiz In Between


Q. 4

What is the purpose of preauricular sulcus in identification of a dead body?

 A

Determination of age

 B

Identification of sex

 C

Determination of race

 D

Cause of death

Q. 4

What is the purpose of preauricular sulcus in identification of a dead body?

 A

Determination of age

 B

Identification of sex

 C

Determination of race

 D

Cause of death

Ans. B

Explanation:

Preauricular sulcus is present in pelvis, used for identification of sex in a skeleton.

It is the attachment of anterior sacroiliac ligament.

It is not frequent in males, if seen, it is narrow and shallow.

It is more frequent in females and it is broad and deep.
 
Ref: The Essentials of Forensic Medicine and Toxicology by Narayan Reddy, 27th edition, Page 56.

 


Q. 5

Sex determination form pelvis possible upto 95°/oaccuracy from following except:

 A

Greater sciatic notch

 B

Pre auricular sulcus

 C

Obturator foramen

 D

None

Q. 5

Sex determination form pelvis possible upto 95°/oaccuracy from following except:

 A

Greater sciatic notch

 B

Pre auricular sulcus

 C

Obturator foramen

 D

None

Ans. D

Explanation:

D i.e. None

–  In the Pelvis the traits seen are – Preauricular sulcus, Greater sciatic notch, Subpubic angle, pelvic brim or inlet, Body & ramus of pubiQ.

–   Ilium, Acetabulam, Iileopectineal line, Ischeal tuberosity, Ischeopubic rami, Symphysis, Pelvic cavity, outlet, SI Joint, Sacrum, Coccyx, Ischepubic index & Sciatic notch index are also seen


Q. 6

Krogman’s formula is related to:    

Odisha 11

 A

Race

 B

Age

 C

Sex

 D

Stature

Q. 6

Krogman’s formula is related to:    

Odisha 11

 A

Race

 B

Age

 C

Sex

 D

Stature

Ans. C

Explanation:

Ans. Sex

Quiz In Between


Q. 7

Most useful for sex determination is:         

Kerala 08

 A

Skull

 B

Femur

 C

Pelvis

 D

Tibia

Q. 7

Most useful for sex determination is:         

Kerala 08

 A

Skull

 B

Femur

 C

Pelvis

 D

Tibia

Ans. C

Explanation:

Ans. Pelvis


Q. 8

Chilotic line helps in determination of:

 A

Race

 B

Sex

 C

Age

 D

Stature

Q. 8

Chilotic line helps in determination of:

 A

Race

 B

Sex

 C

Age

 D

Stature

Ans. B

Explanation:

Ans. Sex


Q. 9

Corporobasal index is used to determine:

AI 08

 A

Age

 B

Sex

 C

Race

 D

Stature

Q. 9

Corporobasal index is used to determine:

AI 08

 A

Age

 B

Sex

 C

Race

 D

Stature

Ans. B

Explanation:

Ans. Sex

Quiz In Between


Q. 10

Ilio-Pectineal line is used to determine difference in ‑

 A

Sex

 B

Race

 C

Age

 D

None of the above

Q. 10

Ilio-Pectineal line is used to determine difference in ‑

 A

Sex

 B

Race

 C

Age

 D

None of the above

Ans. A

Explanation:

Ans. is ‘a’ i.e., Sex


Q. 11

True about preauricular sulcus is

 A

Used for determination of race

 B

Used for determination of stature

 C

Used for determination of sex

 D

None

Q. 11

True about preauricular sulcus is

 A

Used for determination of race

 B

Used for determination of stature

 C

Used for determination of sex

 D

None

Ans. C

Explanation:

Ans. is ‘c’ i.e., Used for determination of sex

 

Quiz In Between


Q. 12

Sex can be determined by all except ‑

 A

Preauricular sulcus

 B

Innominate bone

 C

Pelvic brim

 D

Coccyx

Q. 12

Sex can be determined by all except ‑

 A

Preauricular sulcus

 B

Innominate bone

 C

Pelvic brim

 D

Coccyx

Ans. B

Explanation:

Ans. is ‘b’ i.e., Innominate bone

  Male Female
Preauricular sulcus Not Not frequent, narrow, shallow More frequent, broad & deep
Pelvic brim Heart shaped Circular or elliptical; more spacious; longer diameters
Coccyx Less movable

More movable


Q. 13

Mandible of females has all the following feature except?

 A

Ramus is less broad

 B

Angle of mandible is obtuse

 C

Inverted ramus

 D

Rounded symphysis mentii

Q. 13

Mandible of females has all the following feature except?

 A

Ramus is less broad

 B

Angle of mandible is obtuse

 C

Inverted ramus

 D

Rounded symphysis mentii

Ans. E

Explanation:

All are seen in female mandible i.e., ramus with smaller breath, angle of body of mandible obtuse, ramus inverted,
and chin (symphysis mentis) rounded

Quiz In Between



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