During a physcial examination the veterinarian curls the dogs foot under so it's upside down. the dog immediately brings the foot back to the normal standing position which sense did the dog use to do this? a. proprioception.
b. visceral sensation.
c. tactile sensation.
d. nociception.

A. Proprioception.

Explanation:

Proprioception is a phenomena whereby awarness of the position,form and locomotion of the body is observed. Mechanosensory neurons, proprio-receptors cells that are located in the muscles are responsible for the moderation and regulation of proprioception.

As given in the question, during physical examination, when the veterinarian curls the dogs foot under so it's upside down. The ability for the dog to immediately switch the foot back to the normal standing position is as a aftermath effect of the sense of Proprioception.

fertilization, pictured in figure 24.23a is the process in which gametes (an egg and sperm) fuse to form a zygote. the egg and sperm each contain one set of chromosomes. to ensure that the offspring has only one complete diploid set of chromosomes, only one sperm must fuse with one egg. in mammals, the egg is protected by a layer of extracellular matrix consisting mainly of glycoproteins called the zona pellucida. when a sperm binds to the zona pellucida, a series of biochemical events, called the acrosomal reactions, take place. in placental mammals, the acrosome contains digestive enzymes that initiate the degradation of the glycoprotein matrix protecting the egg and allowing the sperm plasma membrane to fuse with the egg plasma membrane, as illustrated in figure 24.23b. the fusion of these two membranes creates an opening through which the sperm nucleus is transferred into the ovum. the nuclear membranes of the egg and sperm break down and the two haploid genomes condense to form a diploid genome.

explanation:

the correct option is option d