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Also called a bastard wing what is the name for the tuft of feathers attached to the first digit of a bird?
The tuft of feathers attached to the first digit of a bird is called an alula. It helps control airflow over the wing during flight, allowing birds to make sharp maneuvers.
Why were papal bulls called that?
A leaden seal is affixed around a cord and attached to the proclamation. These leaden seals are called bullae. Every papal proclamation has the papal bullae attached to it. On one side of the papal bullae is an engraved picture of two saints, and on the other side is the name and seal of the issuing pope. The bullae attachment is considered authentication of the document as being from the pope. Hence the proclamations are called bulls because of the bullae's attachment.
How is the tendon attached to the foot in a frog?
In frogs, tendons are connected to the foot bones through a series of specialized structures called vincula. These vincula act as connectors between the tendons and bones, allowing for controlled movement of the foot during jumping and other activities.
Superior surface of foot?
The superior surface of the foot is the top surface of the foot that faces upward when standing. It includes the tarsal bones, metatarsal bones, and phalanges of the toes. The skin on this surface is thinner and has fewer hair follicles compared to the sole of the foot. It is essential for weight-bearing and balance during activities like walking and running.
What is attached to a rider's boot to dig into a se horse's side?
Spurs are attached to a rider's boot to lightly dig into a horse's side for added cues and prompts during riding. They are used to communicate specific signals to the horse and help refine the rider's aids.
What are tiny muscles attached to hair follicles that pull the hair upright during fright or cold are called what?
Arrector pili
What are tiny muscles attached to hair follicles that pull the hair upright during fright or cold?
Piloerector muscles
Tiny muscles attached to hair follicles that pull the hair upright during fright or cold?
The muscles are called arrector pili and they pull the hair upright for both of those reasons and a few others.. let me know if you want to know more :)
How feathers attached to the wing?
Feathers are attached to the wing via structures called follicles, which are embedded in the skin. Each feather grows from a follicle, with a shaft (rachis) that extends from the follicle and is surrounded by barbs that interlock to form the feather's surface. The arrangement and structure of these feathers are crucial for flight, providing lift and aerodynamic efficiency. Additionally, the muscles and skin around the follicles allow for some movement and positioning of the feathers during flight.
During a woman's lifetime how many primary follicles fully develop into mature follicles?
400 to 500.
What can a test tube be held upright with?
A test tube can be held upright using a test tube rack, a test tube holder, or a clamp attached to a stand. These tools provide stability and prevent the test tube from tipping over during experiments.
Two chromatids of a chromosome are attached at a point called?
The chromatids of a chromosome are attached at a point called the centromere. The centromere is a region where the two chromatids are closely aligned and hold together until they separate during cell division.
Does all follicles produce eggs inside?
All follicles have the capacity to produce an egg. A baby girl is born with all the follicles she will ever have - about a million, and inside each one is a partially matured egg called an oocyte; each month from puberty onwards one (or occasionally more than one) follicle gets stimulated by hormones: the oocyte matures into an egg which is then released at ovulation. During a woman's reproductive life the pool of follicles decreases by apoptosis (programmed cell death), and when all of the follicles have been used up, either by follicular stimulation or by apoptosis, the woman enters menopause.
What chromatids are attached at the centromere?
Sister chromatids are the chromatids that are attached at the centromere. Sister chromatids are two identical copies of a chromosome produced during DNA replication, and they remain attached until they are separated during cell division.
What is the Function of Graafian follicles?
Graafian follicles are mature ovarian follicles that contain a developing oocyte. Their function is to produce estrogen and prepare the egg for ovulation. When the Graafian follicle ruptures during ovulation, it releases the egg into the fallopian tube for possible fertilization.
When do hair follicles begin to grow on the human body?
Hair follicles begin to grow on the human body during the fetal stage of development, around the 22nd week of gestation.
What is the function of arrector pili muscles and situations that might cause these mucles to contract?
Is attached to the base of the hair follicle and terminates at the epidermis. When this muscle contracts it pulls the hair upright and bunches the skin (goose bumps). This action means that the air is trapped between the hair and helps to insulate the body. The muscle contracts automatically when the body is cold.
