Animal Tissue and Anatomy

The epiglottis is a leaf-shaped cartilage flap that is part of the larynx (voice box). It closes over the trachea during swallowing to prevent food/liquid from entering the airway. The pharynx is the throat cavity, glottis is the vocal cord opening - neither contains the epiglottis.

In embryonic development, oral structures including jaw components derive from pharyngeal arches which are formed from the gill pouch region. The pharynx itself is a cavity, larynx is lower - neither gives rise to prominent oral structures.

In humans, the liver is divided into right and left lobes by the falciform ligament, which creates a complete fissure on the anterior surface of the liver. This anatomical separation is complete and distinct, unlike incomplete septa or partial divisions found in some other species.

Horses are hindgut fermenters, and their colon is the principal site for nutrient absorption, particularly volatile fatty acids produced by microbial fermentation. Unlike ruminants (which have a rumen), horses rely on their enlarged colon for both fermentation and absorption. The rumen and ceacum are not the primary absorptive organs in horses.

In ruminants, the rumen is the primary site for absorption of fluid food and volatile fatty acids produced during fermentation. While the reticulum, omasum, and abomasum have important functions (storage, water absorption, enzymatic digestion respectively), the rumen's large surface area and vascularization make it the principal absorptive organ for fluid nutrients.

The caudate lobe of the liver is located posteriorly and is in close proximity to the kidney, particularly the right kidney. The post caval vein (inferior vena cava) passes through this region. The liver itself, stomach, and ileum are not the closest structures to this part of the caudate lobe.

Jacobson's organ (vomeronasal organ) is located in the floor of the nasal cavities in many vertebrates. It's an accessory olfactory organ that detects pheromones and other chemical signals. It is not found in the buccal cavity, roof of nasal cavities, or optocoel of the brain.

In mammals, the gall bladder is attached to the right lobe of the liver. The gall bladder stores and concentrates bile, which is produced by the liver and released into the digestive system. It is not attached to the caudate lobe, left lobe, or quadrate lobe.

This is where absorption and secretion occurs, as in the inner lining of the intestines, tallciliated columnar epithelium cells are present.

The internal iliac artery supplies to the walls and viscera of the pelvis, the buttock, the reproductive organs and the medial compartment of the thigh.

Radiolaria has1600 chromosomes in its diploid stage.

The mesovarium anchors the ovaries to the posterior leaf of the broad ligament. The mesorchidium suspends testes, mesenteries support intestines generally, and suspensory ligaments connect ovaries to the lateral abdominal wall but don't provide the primary attachment.

Ascaris is an intestinal nematode parasite found in the human alimentary canal (small intestine). It inhabits the lumen of the digestive system. Body cavity, lymph nodes, tissue, and blood vessels are not its habitat.