The correct answer is: A) pontine respiratory centers
The respiratory centre in the pons is responsible for generating and maintaining the rhythm of respiration. Besides this elementary function, it also has the ability to adjust respiration rhythm in c response to physiological changes. Respiratory centre consists of three major respiratory groups of neurons:
• The dorsal respiratory group (DRG)- initiates inspiration (inhalation)
• the ventral respiratory group (VRG)-responsible for exhalation
• Pontine respiratory group- includes the pneumotaxic (controls both the rate and the pattern of breathing) and apneustic centers (promotes inhalation by sending signals to dorsal group).
Answer:
Dermis
Explanation:
The hair follicles are present in the dermal papillae of the dermis layer. The dermal papillae are a series of triangular-shaped cells. The hair follicles are extending from the skin surface to the dermis layer of the skin. The hairs are the extension of the epidermis layer into the dermis layer of the muscle. The hair follicle has 2 parts, such as - the part which extends outside of the epidermis known as the shaft. The base of the follicle known as root. The hair follicle itself has different parts - outer root sheath, inner root sheath, and a centrally placed hair shaft. The erector muscles help in goosebumps of hair during cold.
A virus can only reproduce itself if it takes over host cells!
Segmented digestive system, appendages are animal characteristics.
Animals are a major group of organisms, classified as the kingdom Animalia or metozoa. Animals have several characteristics that set them apart from other living things. They are all eukaryotic and usually multicellular, which separates them from bacteria and most protists. Different animals differ in their own characteristics such as appendages, segmentation among other animal characteristics.
Answer:
D) a cell that has one complete set of chromosomes
Explanation:
Brainliest please?