Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

ANSC 301: Anatomy of Domestic Animals > Trunk Structures > Flashcards

Trunk Structures Flashcards

1
Q

What are the four cutaneous muscles of the trunk?

A
  1. Platysma
  2. Cutaneous trunci
  3. Cutaneous omobrachialis
  4. Preputial muscles
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the characteristics of the Platysma muscle?

A
  1. Platysma
    Covers the neck and face
    Draws lips caudally
    Innervated by the facial nerve
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are the characteristics of the Cutaneous trunci?

A
  1. Cutaneous trunci
    Covers the side of the trunk
    Innervated by the lateral thoracic nerve
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are the characteristics of the Cutaneous omobrachialis?

A
  1. Cutaneous omobrachialis
    Continuation of the cutaneous trunci muscle over the shoulder
    Present in horses and ruminants
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the characteristics of the Preputial muscles?

A
  1. Preputial muscles
    Extends down to the prepuce
    Present in carnivores, ruminants, and pigs
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the difference between hypaxial and epaxial muscles?

A

Hypaxial muscles:
> Ventral to the transverse processes of
the vertebrae
> Innervated by the ventral branches of the
spinal nerves
> Flexors of the spine
Epaxial muscles:
> Dorsal to the transverse processes of
the vertebrae
> Innervated by the dorsal branches of the
spinal nerves
> Extensor of the spine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the structures in the first three layers of epaxial musculature, especially the ones involved in respiration?

A

1st layer: trapezius, cleidocephalicus

2nd layer: latissimus dorsi, rhomboideus

3rd layer: cranial and caudal serratus dorsalis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How do the ribs and diaphragm move during inspiration and expiration?

A

Inspiration
> Ribs pull cranially
> Diaphragm is displaced caudally

Expiration
> Ribs are drawn caudally
> Diaphragm is displaced cranially
> Decreases the transverse diameter and
volume of the thorax

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the location of the dorsal intercostal artery and intercostal nerves in relation to the ribs?

A

Dorsal intercostal artery and intercostal nerves run along the caudal aspect of the ribs.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What nerve (and cranial nerve) innervate the diaphragm?

A

Diaphragm is innervated by the phrenic nerve.
Cranial nerve: Vagus (CN 10)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are the three openings of the diaphragm?

A
  1. Aortic hiatus (dorsal)
  2. Esophageal hiatus
  3. Caval foramen (ventral)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What structures pass through the aortic hiatus?

A

Aorta, azygous vein, thoracic duct

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What structures pass through the esophageal hiatus?

A

Esophagus, dorsal/ventral vagal trunks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What structure passes through the caval foramen?

A

Caudal vena cava

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Name the four abdominal muscles.

A
  1. External abdominal oblique
  2. Internal abdominal oblique
  3. Transversus abdominis
  4. Rectus abdominis
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are the characteristics of the external abdominal oblique?

A

Flat muscle
> Most superficial of the abdominal muscles
> Fibers orient caudoventrally
> Extends from the ribs/thoracolumbar fascia to the ventral midline by a wide aponeurosis

17
Q

What are the characteristics of the internal abdominal oblique?

A

Flat muscle
> Deep to the external abdominal oblique
> Fibers orient cranioventrally
> Arises from the tuber coxae and thoracolumbar fascia
> Inserts on the last rib and the linea alba via an aponeurosis
> Cremaster muscle (caudal slip of the internal abdominal oblique)

18
Q

What are the characteristics of the transversus abdominis?

A

Flat muscle
> Deepest abdominal muscle
> Arises from the inner surface of the last ribs and transverse processes of the lumbar vertebrae
> Fibers run transversely
> Terminates in an aponeurosis on the linea alba

19
Q

What are the characteristics of the rectus abdominis?

A

Paired, long straight muscles extending from the sternum on either side of the linea alba to the pubis
> Lies between the aponeurotic sheaths of the oblique and transverse abdominal muscles
> “Six pack” in humans

20
Q

Which of the four abdominal muscles includes the cremaster muscle?

A

Internal abdominal oblique

21
Q

What is the holding layer when closing the abdominal wall during surgery?

A

External rectus sheath

22
Q

What structures form the superficial inguinal rings?

A

Define: A slit in the aponeurosis of the external abdominal oblique muscle

> Lateral wall - aponeurosis of the external abdominal oblique

> Medial wall - transversalis fascia and a little of the internal abdominal oblique muscle

23
Q

What structures form the deep inguinal rings?

A

> Cranial boundary - caudal border of the internal abdominal oblique

> Caudolateral boundary - inguinal ligament (external abdominal ligament)

> Medial boundary - lateral border of the rectus abdominis muscle

24
Q

What 5 structures pass through the inguinal canal?

A
  1. External pudendal artery/vein
  2. Genitofemoral nerve
  3. Vaginal process (female)
  4. Spermatic cord (male)
  5. Cremaster muscle (male)

ANSC 301: Anatomy of Domestic Animals (22 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions