Superposition is used to assign relative ages to rock layers, the newer layers on the bottom and the oldest layers on the top.

2 answers:

5 0

Superposition is used to assign relative ages to rock layers, the newer layers on the bottom and the oldest layers on the top.
- false

dem82 [27]2 years ago

4 0

The oldest layers are on the bottom thats why they are the oldest. Super position is what it is called if thats what your asking.

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Abe knew from his anatomy class that there are three different kinds of muscle tissue in the body. He knew lifting weights would

Aleksandr [31]

Answer:

Three different kinds of muscles are -:

SKELETAL MUSCELES
CARDIAC MUSCLES
SMOOTH MUSCLES

Explanation:

SKELETAL MUSCLES -: There are long, cylindrical, and striated skeletal muscle cells. They are multi-nucleated, which means they have more than one nucleus. This is because from the fusion of embryonic myoblasts, they are created. Each nucleus controls the sarcoplasm's metabolic demands around it. There are high energy requirements for skeletal muscle cells, because they contain several mitochondria in order to generate adequate ATP. Examples of skeletal muscles: arms and legs- The muscles that belong to the arms and legs feature in pairs. Abdomen and Back- These muscles are connected to the various sets of skeletal muscles that run across the torso.
CARDIAC MUSCLES -: Cardiomyocytes have a short and narrow outline and are fairly rectangular. They are about 0.02 mm wide and 0.1 mm (millimetres) long, respectively. There are many sarcosomes in cardiomyocytes, which provide the required energy for contraction. Cardiomyocytes usually contain a single nucleus, unlike skeletal muscle cells. Cardiomyocytes, although they contain more sarcosomes, normally contain the same cell organelles as skeletal muscle cells. example - cardiac muscle is present in heart.
SMOOTH MUSCLES -: Smooth muscle cells have a single central nucleus and are spindle-shaped. They range in length from 10 to 600 μm (micrometers), and are the tiniest type of muscle cell. In the expansion of organs like the kidneys , lungs, and vagina, they are elastic and therefore essential. As in cardiac and skeletal muscle, the myofibrils of smooth muscle cells are not aligned, meaning they are not striated, hence the term smooth. example of smooth muscles -: Walls of blood vessels , Walls of stomach , Ureters , Intestines , In the aorta (tunica media layer), Iris of the eye. ,Prostate and Gastrointestinal Tract.

5 0

2 years ago

What tissue has lacunae, calcium salts, and blood vessels? Select one: a. fibrocartilaginous tissue b. areolar tissue c. bone (o

kipiarov [429]

Answer:

c. bone (osseous tissue)

Explanation:

The extracellular matrix of the bone tissue consists of an organic component and an inorganic component.

The organic component includes Collagen , proteoglycans and glycoprotiens, While the inorganic component contains calcium and phopsphorus. The cells are present in the lacunae situated betwen the lamellae and contain a number of oblong spaces.

It also contains blood vessels as a typical long bons is supplied by a nutrient artery , periosteal vessels and epiphyseal arteries.

Hence C is the right answer.

8 0

3 years ago

The head of a giraffe is 2.0 m above its heart and the density of the blood is 1.05 103 kg/m3. what is the difference in pressur

erastovalidia [21]

The giraffe head is higher than its heart so the blood pressure in the head must be lower than in the heart. The pressure is directly related to the density, gravity, and the height. The calculation would be:

P = ρ*g*h
P= 1.05* 10^3 kg/m3 * 9.8m/s2 * 2m= 20 580 pascals= 20.58 kpa

8 0

2 years ago

Please answer this ASAP

loris [4]

I hope this answer helped! please rate 5 stars >:)

8 0

2 years ago

PLZ HELP ME I WILL GIVE YOU 30 POINTS

const2013 [10]

Pretty sure it would be A it makes the most sense

7 0

2 years ago

Read 2 more answers