Miller's Anatomy of the Dog, 4e

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Again, a dog’s ovaries are attached by a mesovarium to the body wall and the mesosalpinx. Besides this mesovarium, you will find some ligamentous attachment to the ovaries. There are suspensory and proper ligaments for the ovaries. I hope you got a basic idea of some clinically important organs from a dog with the diagram. But, I recommended learning dog organ anatomy separately with their details features from different systems of a dog’s body. Now, I will enlist and describe the organs from the different body systems of a dog. Dogs may prefer, when they are off the leash and Earth's magnetic field is calm, to urinate and defecate with their bodies aligned on a north–south axis. [40] Another study suggested that dogs can see the earth's magnetic field. [41] [42] Temperature regulation [ edit ] The highly sensitive nose of a dog.

Male dogs also have a penis bone, known as the baculum. This is common among mammals as it is used to maintain an erection during intercourse. Theoretically, this is believed to be down to the fact that dogs have to copulate for longer as they have less opportunity for mating in the wild (i.e. they have to make it count). Humans do not have a baculum as it is believed we have more opportunity thanks to relative availability of partners. How many bones does a dog have? Dogs are highly variable in height and weight. The smallest known adult dog was a Yorkshire Terrier that stood only 6.3cm (2.5in) at the shoulder, 9.5cm (3.7in) in length along the head and body, and weighed only 113 grams (4.0oz). The largest known adult dog was an English Mastiff which weighed 155.6kg (343lb). [2] The tallest known adult dog is a Great Dane that stands 106.7cm (42.0in) at the shoulder. [3] Tensor fasciae latae: originates on the tuber coxae of the ilium and inserts on the lateral femoral fascia. It acts to flex the hip and extend the stifle. It is innervated by the cranial gluteal nerve. Salivary glands are the accessory organ of the dog digestive system anatomy. In a dog, you will find the same salivary glands – parotid, sublingual, mandibular, and zygomatic as found in the other animals. These are the major salivary glands of the dog’s oral cavity. So, again, you will find some of the minor salivary glands like buccal, palatine, lingual, and molar in the oral cavity of a dog. Dogs breathe using lungs. They are part of their respiratory system which is also comprised of the larynx (where we find the vocal cords), the trachea, the bronchi and the lungs.There are two different parts in the ureter of a dog – one is the abdominal, and another is the pelvic part. Do you know where the abdominal part of the ureter starts? The abdominal aorta of a dog divides into paired external iliac arteries that supply to the pelvic limb. These external iliac arteries of the dog ends at the internal iliac and median sacral arteries in a dog. Domestic dogs often display the remnants of countershading, a common natural camouflage pattern. The general theory of countershading is that an animal that is lit from above will appear lighter on its upper half and darker on its lower half where it will usually be in its own shade. [16] [17] This is a pattern that predators can learn to watch for. A counter shaded animal will have dark coloring on its upper surfaces and light coloring below. [16] This reduces the general visibility of the animal. One reminder of this pattern is that many breeds will have the occasional "blaze", stripe, or "star" of white fur on their chest or undersides. [17]

Abductor pollicis longus: originates on the ulna and inserts on metacarpal 1. It acts to abduct the digit and extend the carpal joints. It is innervated by the radial nerve.

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In most dogs, the central, intermediate, and corner incisor teeth erupt at the time between two to five months. The canine teeth of the dog erupt between four to five months. There are many internal and external features in the dog heart that you should know as a veterinary student. Here, I will not provide all the anatomical facts about the dog heart as you will find a dedicated article on the dog heart anatomy. I request you to learn the full anatomical features of the dog heart from that article by the anatomy learner. The left lung of a dog only consists of two lobes – caudal and cranial lobes. Again, you will find the cranial and caudal parts in the cranial lobe of the left lung. The cranial part of the cranial lobe of the left lung is transversely compressed between the heart and the lateral thoracic wall. The eyes of different breeds of dogs have different shapes, dimensions, and retina configurations. [33] Many long-nosed breeds have a "visual streak"—a wide foveal region that runs across the width of the retina and gives them a very wide field of excellent vision. Some long-muzzled breeds, in particular, the sighthounds, have a field of vision up to 270° (compared to 180° for humans). Short-nosed breeds, on the other hand, have an "area centralis": a central patch with up to three times the density of nerve endings as the visual streak, giving them detailed sight much more like a human's. Some broad-headed breeds with short noses have a field of vision similar to that of humans. [25] [26] Dog retina showing optic disc and vasculature [epiCam] Christiansen, Per; Wroe, Stephen (2007). "Bite Forces and Evolutionary Adaptations to Feeding Ecology in Carnivores". Ecology. 88 (2): 347–358. doi: 10.1890/0012-9658(2007)88[347:bfaeat]2.0.co;2. PMID 17479753.

Elert, Glenn; Timothy Condon (2003). "Frequency Range of Dog Hearing". The Physics Factbook . Retrieved 22 October 2008. Jonica Newby; Caroline Penry-Davey (25 September 2003). "Catalyst: Dogs' Eyes". Australian Broadcasting Corporation . Retrieved 26 November 2006. Flexor carpi ulnar: originates on the olecranon and inserts on the accessory carpal bone. It acts to flex the carpus. It is innervated by the ulnar nerve. Pancreas – you will find two parts (right and left) in a dog’s pancreas. Both the parts meet together behind the pylorus and form a V-shaped structure that extends caudodorsally, mostly up to the corresponding kidneys.

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You should know the location of all the organs in dog anatomy. I will enlist all the organs of a dog from its different organs system in the next section of this article. But, let’s see some of the important organs that you should not avoid to learn their details and anatomical features. Fine, let’s see what they are – The ovarian extremity of the uterine tube is the infundibulum and locates near the edge of the opening of the ovarian bursa. Again, the fimbriae are usually visible, projecting out the opening of the ovarian bursa. Dog uterus anatomy Let’s see some of the branches of the common carotid artery, internal carotid, and external carotid artery – Oral cavity proper – includes palates, gums, teeth, tongue, and salivary glands (parotid, mandibular, sublingual, and zygomatic),